func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     unsigned long long sum{};     int cur{1};     for (int i{}; i < m; i++) {       int x;       cin >> x;       if (cur < x) {         sum += x - cur;         cur = x;       } else if (cur > x) {         sum += n - cur + x;         cur = x;       } else         continue;     }     cout << sum;   }   