func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     long long n, i, j, k, l, m, b, t, sum, sum1, flag, max1, min1;     cin >> n >> m;     long long a[n + 1];     for (i = 1; i <= n; i++) {       cin >> a[i];     }     sum = 0;     long long pre[100009];     pre[1] = a[1];     for (i = 2; i <= n; i++) {       pre[i] = pre[i - 1] + a[i];     }     max1 = INT_MIN;     for (i = 1; i <= n; i++) {       k = pre[i];       l = pre[n] - pre[i];       k = k % m;       l = l % m;       max1 = max(k + l, max1);     }     cout << max1 << endl;   }   