diff --git a/1316.cpp b/1316.cpp
new file mode 100644
index 0000000..c3ff938
--- /dev/null
+++ b/1316.cpp
@@ -0,0 +1,42 @@
+#include <iostream>
+#include <vector>
+#include <string>
+using namespace std;
+
+bool wordchecker(string s) {
+	vector<bool> check(26, false);
+	char temp;
+
+	for (int i = 0; i < s.length(); i++) {
+		if (check[s[i] - 'a'] == false) {
+			check[s[i] - 'a'] = true;
+		}
+		else {
+			if (temp != s[i]) {
+				return false;
+			}
+		}
+		temp = s[i];
+	}
+	return true;
+}
+
+int main() {
+	vector<bool> check(26, false);
+	int n;
+	cin >> n;
+
+	int count = 0;
+
+	for (int i = 0; i < n; i++) {
+		string s;
+		cin >> s;
+		if (wordchecker(s) == true) {
+			count++;
+		}
+	}
+
+	cout << count;
+
+	return 0;
+}
\ No newline at end of file
diff --git a/2840.cpp b/2840.cpp
new file mode 100644
index 0000000..a8745b9
--- /dev/null
+++ b/2840.cpp
@@ -0,0 +1,53 @@
+#include <iostream>
+#include <vector>
+using namespace std;
+
+string getWheel(int n, int k) {
+	vector<char> wheel(n, '?');
+	vector<char> check(26, false);
+
+	int point = 0;
+
+	for (int i = 0; i < k; i++) {
+		int cnt;
+		char letter;
+		cin >> cnt >> letter;
+		cnt %= n;
+		point -= cnt;
+		if (point < 0) {
+			point += n;
+		}
+		if (wheel[point] != '?' && wheel[point] != letter) {
+			return "!";
+		}
+		else
+			wheel[point] = letter;
+	}
+
+	for (int i = 0; i < wheel.size(); i++) {
+		if (wheel[i] == '?')
+			continue;
+		if (check[wheel[i] - 'A'] == false) {
+			check[wheel[i] - 'A'] = true;
+		}
+		else
+			return "!";
+	}
+
+	string answer = "";
+
+	for (int i = 0; i < wheel.size(); i++) {
+		
+		answer += wheel[(i + point)%n];
+	}
+	return answer;
+}
+
+int main() {
+	int n, k;
+	cin >> n >> k;
+
+	cout << getWheel(n, k);
+
+	return 0;
+}
\ No newline at end of file
diff --git a/5397.cpp b/5397.cpp
new file mode 100644
index 0000000..5e4a971
--- /dev/null
+++ b/5397.cpp
@@ -0,0 +1,72 @@
+#include <iostream>
+#include <string>
+#include <stack>
+using namespace std;
+
+string getPassword(string s) {
+
+	stack<char> front;
+	stack<char> back;
+
+	while (!front.empty()) {
+		front.pop();
+	}
+	while (!back.empty()) {
+		back.pop();
+	}
+
+	for (int i = 0; i < s.length(); i++) {
+		if (s[i] == '<') {
+			if (!front.empty()) {
+				back.push(front.top());
+				front.pop();
+			}
+		}
+
+		else if (s[i] == '>') {
+			if (!back.empty()) {
+				front.push(back.top());
+				back.pop();
+			}
+		}
+
+		else if (s[i] == '-') {
+			if (!front.empty()) {
+				front.pop();
+			}
+		}
+
+		else {
+			// ¿µ¹®ÀÚ ÀÔ·Â
+			front.push(s[i]);
+		}
+	}
+
+	while (!front.empty()) {
+		back.push(front.top());
+		front.pop();
+	}
+
+	string password;
+
+	while (!back.empty()) {
+		password += back.top();
+		back.pop();
+	}
+
+	return password;
+}
+
+int main() {
+	int n;
+	cin >> n;
+
+	while (n--) {
+		string s;
+		cin >> s;
+		cout << getPassword(s) << '\n';
+	}
+
+
+	return 0;
+}
\ No newline at end of file
diff --git a/8911.cpp b/8911.cpp
new file mode 100644
index 0000000..5337a9e
--- /dev/null
+++ b/8911.cpp
@@ -0,0 +1,56 @@
+#include <iostream>
+#include <string>
+#include <vector>
+using namespace std;
+
+int getSize(string s) {
+	int top = 0, bottom = 0, left = 0, right = 0;
+	int dir = 0; // ¹æÇâ
+	vector<int> point(4, 0); // ºÏ µ¿ ³² ¼­ ½Ã°è¹æÇâ
+
+	for (int i = 0; i < s.length(); i++) {
+		if (s[i] == 'F') {
+			point[dir % 4]++;
+			point[(dir + 2) % 4]--;
+		}
+		else if (s[i] == 'B') {
+			point[dir % 4]--;
+			point[(dir + 2) % 4]++;
+		}
+		else if (s[i] == 'L') {
+			dir += 3;
+		}
+		else if (s[i] == 'R') {
+			dir++;
+		}
+
+		if (point[0] > top) {
+			top = point[0];
+		}
+		if (point[1] > right) {
+			right = point[1];
+		}
+		if (point[2] > bottom) {
+			bottom = point[2];
+		}
+		if (point[3] > left) {
+			left = point[3];
+		}
+	}
+	
+	int size = (top + bottom) * (right + left);
+	return size;
+}
+
+int main() {
+	int n;
+	cin >> n;
+
+	for (int i = 0; i < n; i++) {
+		string s;
+		cin >> s;
+		cout << getSize(s) << '\n';
+	}
+
+	return 0;
+}
\ No newline at end of file