func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, m;   unsigned long long c[100005], t[100005], total[100005];   void solve() {     memset(total, 0, sizeof(total));     for (int i = 1; i <= n; i++) {       total[i] = total[i - 1] + c[i] * t[i];     }     unsigned long long v;     int idx = 0;     for (int i = 0; i < m; i++) {       cin >> v;       while (total[idx] < v && idx <= n) {         idx++;       }       printf( %d n , idx);     }     return;   }   int main() {     cin >> n >> m;     memset(c, 0, sizeof(c));     memset(t, 0, sizeof(t));     for (int i = 1; i <= n; i++) {       cin >> c[i] >> t[i];     }     solve();     return 0;   }   