diff --git a/_munhyeong/1113.cpp b/_munhyeong/1113.cpp
new file mode 100644
index 00000000..fa683922
--- /dev/null
+++ b/_munhyeong/1113.cpp
@@ -0,0 +1,81 @@
+#include <algorithm>
+#include <iostream>
+#include <vector>
+#include <queue>
+
+using namespace std;
+
+int dy[4] = { 1, -1, 0, 0 };
+int dx[4] = { 0, 0, 1, -1 };
+void BFS(vector<vector<int>> &board, int h) {
+    vector<vector<bool>> visited(board.size(), vector<bool>(board[0].size(), false));
+    queue<pair<int, int>> q;
+
+    q.push({ 0, 0 });
+    visited[0][0] = true;
+    board[0][0] = h;
+    while (!q.empty()) {
+        pair<int, int> front = q.front();
+        q.pop();
+
+        for (int dir = 0; dir < 4; dir++) {
+            int ny = front.first + dy[dir];
+            int nx = front.second + dx[dir];
+
+            if (ny < 0 || nx < 0 || ny >= board.size() || nx >= board[0].size() || visited[ny][nx])
+                continue;
+            visited[ny][nx] = true;
+
+            if (board[ny][nx] < h) {
+                q.push({ ny, nx });
+                board[ny][nx] = h;
+            }
+        }
+    }
+}
+
+void print(vector<vector<int>> &board) {
+    for (int y = 0; y < board.size(); y++) {
+        for (int x = 0; x < board[0].size(); x++) {
+            cout << board[y][x] << " ";
+        }
+        cout << "\n";
+    }
+    cout << "\n";
+}
+
+int main() {
+    int N, M;
+    cin >> N >> M;
+
+    int maxV = 0;
+    vector<vector<int>> board(N + 2, vector<int>(M + 2));
+    for (int y = 1; y <= N; y++) {
+        string input;
+        cin >> input;
+        for (int x = 0; x < M; x++) {
+            board[y][x + 1] = input[x] - '0';
+            maxV = max(maxV, board[y][x + 1]);
+        }
+    }
+    // print(board);
+
+    int answer = 0;
+    for (int h = 1; h <= maxV; h++) {
+        BFS(board, h);
+        // print(board);
+
+        for (int y = 1; y <= N; y++) {
+            for (int x = 1; x <= M; x++) {
+                if (board[y][x] < h) {
+                    answer += 1;
+                    board[y][x] = h;
+                }
+            }
+        }
+    }
+
+    cout << answer;
+
+    return 0;
+}