1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
#include <iostream>
#include <vector>
using namespace std;
#define int long long
main(){
    ios_base::sync_with_stdio(false);
    int n,m;
    cin >> n >> m;
    vector<int> A(n);
    for(auto &i:A)
        cin >> i;
    vector<int> T(n,0);
    int curr=0;
    for(int i=0;i<m;i++){
        int d,b;
        int sum=0;
        cin >> d >> b;
        for(int j=0;j<n;j++){
            T[j]+=(d-curr)*A[j];
            if(T[j]>b){
                sum+=T[j]-b;
                T[j]=b;
            }
        }
        curr=d;
        cout << sum << endl;
    }
    return 0;
}