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
#include<cstdio>
int main () {

	int i, j, n, m, a;
  long long d, b;
	scanf("%d %d", &n, &m);
  
  int len[n];
  long long int current[n];
  
  for(i = 0; i < n; i++) {
    scanf("%d", &a);
    len[i] = a;
    current[i] = 0;
	}
  
  long long int previousDay = 0;
  
  for(j = 0; j < m; j++) {
		scanf("%lld %lld", &d, &b);
    
    long long int daysPassed = d - previousDay;
    long long int sum = 0;
    for(i = 0; i < n; i++) {
      current[i] = current[i] + daysPassed * len[i];
      
      if(current[i] > b) {
        sum += (current[i] - b);
        current[i] = b;
      }
    }
    
    printf("%lld\n", sum);
    
    previousDay = d;
	}
	
	
	return 0;
}