diff --git a/SPOJ_LIST/ABSP1.cpp b/SPOJ_LIST/ABSP1.cpp
new file mode 100644
index 000000000..3239bfc4b
--- /dev/null
+++ b/SPOJ_LIST/ABSP1.cpp
@@ -0,0 +1,37 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	 ll n;
+       	 cin>>n;
+       	 ll a[n];
+       	 fo(i,n)
+       	   cin>>a[i];
+       	 ll sum=0;
+       	 for(ll i=0;i<n;i++)
+       	 {
+       	 	sum+=i*a[i]-(n-i-1)*a[i];
+       	 }
+       	 cout<<sum<<"\n";
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/DOL.cpp b/SPOJ_LIST/DOL.cpp
new file mode 100644
index 000000000..4b3467a6e
--- /dev/null
+++ b/SPOJ_LIST/DOL.cpp
@@ -0,0 +1,32 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       for(int i=0;i<t;i++)
+       {
+       	 ll n;
+       	 cin>>n;
+       	 	while(n%2==0)
+       	 	{
+       	 		n/=2;
+       	 	}
+       	 	cout<<"Case "<<(i+1)<<": "<<n<<"\n";
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/ESYRCRTN.cpp b/SPOJ_LIST/ESYRCRTN.cpp
new file mode 100644
index 000000000..a8fea5d4d
--- /dev/null
+++ b/SPOJ_LIST/ESYRCRTN.cpp
@@ -0,0 +1,34 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	 ll n;
+       	 cin>>n;
+
+       	 ll a[]={1,4,6,5,2,0};
+       	 cout<<(a[(n-1)%6])<<"\n";
+
+       }
+
+
+   return 0;
+ }
+ /*******************************************************
+ WRONG QUESTION(ERROR)
+**********************************************************/
\ No newline at end of file
diff --git a/SPOJ_LIST/GIRLSNBS.cpp b/SPOJ_LIST/GIRLSNBS.cpp
new file mode 100644
index 000000000..84e2b79df
--- /dev/null
+++ b/SPOJ_LIST/GIRLSNBS.cpp
@@ -0,0 +1,47 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll b,g;
+       while(cin>>g>>b && g!=-1)
+       {
+       	ll ans=0;
+       	ll k=g/(b+1);
+        ll l=b/(g+1);
+      if(g==b)
+        {
+        	if(g==0 && b==0)
+        		ans=0;
+        	else 
+        		ans=1;
+        }
+      else if(g>b)
+        {
+          if(g%(b+1)!=0)
+        	 ans=1+k;
+          else
+             ans=k;        
+        }
+      else
+        {
+           if(b%(g+1)!=0)
+        	    ans=1+l;
+           else
+             ans=l;
+        }
+        cout<<ans<<"\n";
+       }
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/MOHIB.cpp b/SPOJ_LIST/MOHIB.cpp
new file mode 100644
index 000000000..1d6c868fd
--- /dev/null
+++ b/SPOJ_LIST/MOHIB.cpp
@@ -0,0 +1,31 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	 ll x,a;
+       	 cin>>x>>a;
+       	 ll n=a-x;
+       	 ll sum=n*(a+1);
+       	 sum=sum-n*(n-1)/2;
+         cout<<sum<<"\n";
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/PHT.cpp b/SPOJ_LIST/PHT.cpp
new file mode 100644
index 000000000..addf9a222
--- /dev/null
+++ b/SPOJ_LIST/PHT.cpp
@@ -0,0 +1,34 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       for(int i=0;i<t;i++)
+       {
+       	ll n,ans=0;
+       	cin>>n;
+
+       	if(n<3)
+          ans=0;
+        else
+          ans=sqrt(1+n)-1;
+        cout<<"Case "<<(i+1)<<": "<<ans<<"\n";
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/QUADAREA.cpp b/SPOJ_LIST/QUADAREA.cpp
new file mode 100644
index 000000000..19df335d4
--- /dev/null
+++ b/SPOJ_LIST/QUADAREA.cpp
@@ -0,0 +1,34 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+         double a,b,c,d;
+         cin>>a>>b>>c>>d;
+
+         double sp=(a+b+c+d)/2;
+         double area=sqrt((sp-a)*(sp-b)*(sp-c)*(sp-d));
+
+         cout<<fixed<<setprecision(2)<<(double)area<<"\n";
+
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/SPCQ.cpp b/SPOJ_LIST/SPCQ.cpp
new file mode 100644
index 000000000..7b68eaca1
--- /dev/null
+++ b/SPOJ_LIST/SPCQ.cpp
@@ -0,0 +1,42 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+
+
+ll sum(ll n)
+{
+	ll digsum=0;
+	while(n>0)
+	{
+		digsum+=n%10;
+		n/=10;
+	}
+	return digsum;
+}
+
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	 ll n;
+       	 cin>>n;
+       	 while((n%sum(n))!=0)
+       	 {
+       	 	n++;
+       	 }
+       	 cout<<n<<"\n";
+       }
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/SPOJQUESTIONSLIST.pdf b/SPOJ_LIST/SPOJQUESTIONSLIST.pdf
new file mode 100644
index 000000000..dc971dfe5
Binary files /dev/null and b/SPOJ_LIST/SPOJQUESTIONSLIST.pdf differ
diff --git a/SPOJ_LIST/acpc11b.cpp b/SPOJ_LIST/acpc11b.cpp
new file mode 100644
index 000000000..5b2d797fa
--- /dev/null
+++ b/SPOJ_LIST/acpc11b.cpp
@@ -0,0 +1,51 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	 ll n,m,diff=0,mini=INT_MAX;
+       	 cin>>n;
+       	 ll a[n];
+       	 fo(i,n)
+       	  cin>>a[i];
+       	  cin>>m;
+       	 ll b[m];
+       	 fo(i,m)
+       	  cin>>b[i];
+
+       	sort(a,a+n);
+       	sort(b,b+m);
+
+       	ll c=0,d=0;
+       	ll res=INT_MAX;
+
+       	while(c<n && d<m)
+       	{
+       		if(abs(a[c]-b[d])<res)
+       			res=abs(a[c]-b[d]);
+
+       		if(a[c]<b[d])
+       			c++;
+       		else
+       			d++;
+       	}
+       	cout<<res<<"\n";
+
+       }
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/army.cpp b/SPOJ_LIST/army.cpp
new file mode 100644
index 000000000..cb4c1301f
--- /dev/null
+++ b/SPOJ_LIST/army.cpp
@@ -0,0 +1,43 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	ll n,m,maxa,maxb,ans;
+       	cin>>n>>m;
+       	vector<ll> a(n);
+       	vector<ll> b(m);
+
+       	fo(i,n)
+       	  cin>>a[i];
+       	fo(i,m)
+       	  cin>>b[i];
+       	maxa=*max_element(a.begin(),a.end());
+       	maxb=*max_element(b.begin(),b.end());
+
+       	// ans=max(maxa,maxb);
+       	if(maxa>=maxb)
+       		cout<<"Godzilla"<<"\n";
+       	else 
+       		cout<<"MechaGodzilla"<<"\n";
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/codchess.cpp b/SPOJ_LIST/codchess.cpp
new file mode 100644
index 000000000..66fac4f3e
--- /dev/null
+++ b/SPOJ_LIST/codchess.cpp
@@ -0,0 +1,32 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	ll n;cin>>n;
+
+       	if(n%2)
+       		cout<<0<<"\n";
+       	else
+       		cout<<1<<"\n";
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/crds.cpp b/SPOJ_LIST/crds.cpp
new file mode 100644
index 000000000..fcd07b76d
--- /dev/null
+++ b/SPOJ_LIST/crds.cpp
@@ -0,0 +1,35 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	 ll n;
+       	 cin>>n;
+
+       	 ll MOD=1000007;
+
+       	 //ll ans=((((n%MOD)*(n%MOD)*(n%MOD))%MOD + ((n%MOD)*(n%MOD))%MOD -(2*(n%MOD))%MOD))/2%MOD;
+       	 ll ans=(((3*(n%MOD)*(n%MOD))+(n%MOD))/2)%MOD;
+
+       	 cout<<ans<<"\n";
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/ec_conb.cpp b/SPOJ_LIST/ec_conb.cpp
new file mode 100644
index 000000000..91ce82159
--- /dev/null
+++ b/SPOJ_LIST/ec_conb.cpp
@@ -0,0 +1,37 @@
+#include<bits/stdc++.h>
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define MOD 1000000007
+#define pb push_back
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+
+int main() {
+    ios_base::sync_with_stdio(false);
+	cin.tie(NULL);
+
+	int t, x,tem,tem2;
+	cin>>t;
+	while(t--)
+	{
+	   tem = 0;;
+		cin >> x;
+		if (x % 2 != 0)
+		{
+			cout << x << endl;
+			continue;
+		}
+
+		while (x != 0)
+		{
+			tem = tem << 1;
+			tem = tem + (x & 1);
+			x = x >> 1;
+
+		}
+		cout << tem << endl;
+	}
+
+return 0;
+}
\ No newline at end of file
diff --git a/SPOJ_LIST/fashion.cpp b/SPOJ_LIST/fashion.cpp
new file mode 100644
index 000000000..c44848499
--- /dev/null
+++ b/SPOJ_LIST/fashion.cpp
@@ -0,0 +1,44 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	 ll n,hb=0,sum=0;
+       	 cin>>n;
+       	 ll a[n];
+       	 ll b[n];
+       	 fo(i,n)
+       	 cin>>a[i];
+       	 fo(i,n)
+       	 cin>>b[i];
+
+       	 sort(a,a+n);
+       	 sort(b,b+n);
+
+       	 fo(i,n)
+       	 {
+       	 	hb=a[i]*b[i];
+            sum+=hb;
+       	 }
+       	 cout<<sum<<"\n";
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/fctrl.cpp b/SPOJ_LIST/fctrl.cpp
new file mode 100644
index 000000000..bd7950a27
--- /dev/null
+++ b/SPOJ_LIST/fctrl.cpp
@@ -0,0 +1,34 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	ll n,ans=0;
+       	cin>>n;
+       	for(ll i=5;n/i>=1;i*=5)
+       	{
+           ans+=n/i;
+       	}
+       	cout<<ans<<"\n";
+
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/fctrl2(c++17).cpp b/SPOJ_LIST/fctrl2(c++17).cpp
new file mode 100644
index 000000000..e94cef75f
--- /dev/null
+++ b/SPOJ_LIST/fctrl2(c++17).cpp
@@ -0,0 +1,40 @@
+#include<bits/stdc++.h>
+#include <boost/multiprecision/cpp_int.hpp> 
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using boost::multiprecision::cpp_int; 
+using namespace std;
+
+
+cpp_int boost_factorial(int num) 
+{ 
+    cpp_int fact = 1; 
+    for (int i=num; i>1; --i)     
+        fact *= i; 
+    return fact; 
+} 
+
+
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	ll n;
+       	cin>>n;
+       	cout<<boost_factorial(n)<<"\n";
+
+       }
+
+
+   return 0;
+ }
\ No newline at end of file
diff --git a/SPOJ_LIST/fctrl2(using int array).cpp b/SPOJ_LIST/fctrl2(using int array).cpp
new file mode 100644
index 000000000..c870fe36f
--- /dev/null
+++ b/SPOJ_LIST/fctrl2(using int array).cpp	
@@ -0,0 +1,29 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+
+       }
+
+
+   return 0;
+ }
+
+
+ // TO DO
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diff --git a/SPOJ_LIST/ieeeeebgam.cpp b/SPOJ_LIST/ieeeeebgam.cpp
new file mode 100644
index 000000000..60a00a007
--- /dev/null
+++ b/SPOJ_LIST/ieeeeebgam.cpp
@@ -0,0 +1,33 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+ 
+       ll t;
+       cin>>t;
+       while(t--)
+       {
+       	int n;
+       	cin>>n;
+
+       	double m=n;
+       	double ans=m/(m+1);
+       	cout<<fixed<<setprecision(8)<<ans<<"\n";
+
+
+       }
+
+
+   return 0;
+ }
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diff --git a/SPOJ_LIST/infix2postfix.cpp b/SPOJ_LIST/infix2postfix.cpp
new file mode 100644
index 000000000..d46b19403
--- /dev/null
+++ b/SPOJ_LIST/infix2postfix.cpp
@@ -0,0 +1,85 @@
+#include<bits/stdc++.h>
+
+#define ll long long int
+#define watch(x) cout << (#x) << " is " << (x) << endl  //watch function print variable and value for debugging
+#define count_ones __builtin_popcountll                  // count_ones(9) is equal to 2 valid for ll also
+#define fast_io ios_base::sync_with_stdio(false); cin.tie(NULL);
+#define fo(i,n) for(ll i=0;i<n;i++)
+using namespace std;
+ 
+int prec(char c)
+{
+	if(c=='^')
+		return 3;
+	else if(c=='*' || c=='/')
+		return 2;
+	else if(c=='+' || c=='-')
+		return 1;
+	else 
+		return -1;
+}
+
+void infix2postfix(string s)
+{
+	stack<char> st;
+	st.push('N');
+	int l=s.length();
+	string ns;
+
+	for(int i=0;i<l;i++)
+	{
+		if((s[i]>='a' && s[i]<='z') || (s[i]>='A' && s[i]<='Z'))
+			ns+=s[i];
+		else if(s[i]=='(')
+			st.push('(');
+		else if(s[i]==')')
+		{
+			while(st.top()!='N' && st.top()!='(')
+			{
+				char c=st.top();
+				st.pop();
+				ns+=c;
+			}
+			if(st.top()=='(')
+			{
+				char c=st.top();
+				st.pop();
+			}
+		}
+		else
+		{
+			while(st.top()!='N' && prec(s[i])<=prec(st.top()))
+			{
+				char c=st.top();
+				st.pop();
+				ns+=c;
+			}
+			st.push(s[i]);
+		}
+	}
+	//pop whatever remains
+	while(st.top()!='N')
+	{
+		char c=st.top();
+		st.pop();
+		ns+=c;
+	}
+	cout<<ns<<"\n";
+}
+
+int main() {
+ #ifndef ONLINE_JUDGE
+	    freopen("input.txt", "r", stdin);
+        freopen("output.txt", "w", stdout);
+ #endif
+       fast_io
+
+       int n;cin>>n;
+       while(n--)
+       {
+       	string exp="";
+       cin>>exp;
+       infix2postfix(exp);
+       }
+   return 0;
+ }
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