func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, p, i, j, k, result;     cin >> n >> p;     int a[n + 1], b[n + 1];     for (i = 1; i <= n; i = i + 1) cin >> a[i];     i = 0;     j = p - 1;     result = p - 1;     do {       int m = (i + j) / 2;       bool check = true;       b[0] = 0;       for (int k = 1; k <= n; k = k + 1) b[k] = 1000000000;       for (int k = 1; k <= n; k = k + 1) {         if (((a[k] + m) % p >= b[k - 1]) && (a[k] + m >= p)) b[k] = b[k - 1];         if ((b[k - 1] - a[k] >= 0) && (b[k - 1] - a[k] <= m))           b[k] = min(b[k], b[k - 1]);         if (a[k] >= b[k - 1]) b[k] = min(b[k], a[k]);         if (b[k] == 1000000000) {           check = false;           break;         };       }       if (check == true) {         j = m - 1;         result = min(result, m);       } else         i = m + 1;     } while (i <= j);     cout << result;   }   