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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
#include <cstdio>
#define LL unsigned long long

int main()
{
    int n, m, i, j;
    LL rozn;
    scanf("%d %d", &n, &m);

    LL *a = new LL[n];
    LL *d = new LL[m];
    LL *b = new LL[m];
    LL *w = new LL[m];
    LL *k = new LL[n];

    for(i=0; i<n; i++)
    {
        scanf("%llu", &a[i]);
        k[i] = 0;
    }

    for(i=0; i<m; i++)
    {
        scanf("%llu %llu", &d[i], &b[i]);
        w[i] = 0;
    }

    for(i=0; i<m; i++)
    {
        for(j=0; j<n; j++)
        {
            if (i==0) k[j] += a[j]*d[i];
            else k[j] += a[j]*(d[i]-d[i-1]);

            if (k[j] > b[i])
            {
                rozn = k[j] - b[i];
                w[i] += rozn;
                k[j] -= rozn;
            }
        }
    }

    for (i=0; i<m; i++) printf("%llu\n", w[i]);
}