func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     int arr[m + 1];     arr[0] = 1;     for (int i = 1; i <= m; i++) cin >> arr[i];     long long step = 0;     for (int i = 0; i < m; i++) {       if (arr[i + 1] < arr[i])         step += (n - arr[i]) + (arr[i + 1] - 1) + 1;       else         step += arr[i + 1] - arr[i];     }     cout << step;     return 0;   }   