Add 22113.cpp

22xxx/22113.cpp

@@ -0,0 +1,25 @@
+#include <iostream>
+#include <vector>
+using namespace std;
+
+void solve(void) {
+  int n, m; cin >> n >> m;
+  vector<int> v(m);
+  for (int i=0; i<m; i++) cin >> v[i], v[i]--;
+  vector<vector<int>> a(n, vector<int>(n));
+  for (int i=0; i<n; i++) for (int j=0; j<n; j++) cin >> a[i][j];
+
+  int ans = 0;
+  for (int i=1; i<m; i++) {
+    ans += a[v[i-1]][v[i]];
+  }
+  cout << ans;
+}
+
+int main(void) {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  solve();
+  return 0;
+}