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Plabon_dutta

sheet 3 y

Dec 27th, 2020
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  1. #include<stdio.h>
  2. #include<string.h>
  3. #include<math.h>
  4. int main() {
  5. long int n, q, i, j, l, r;
  6. scanf("%ld %ld", &n, &q);
  7. long long int arr[n];
  8. for(i=0; i<n; i++) {
  9. scanf("%lld", &arr[i]);
  10. }
  11. for(i=0; i<q; i++) {
  12. scanf("%ld %ld", &l, &r);
  13. long long int sum=0;
  14. for(j=l-1; j<r; j++) {
  15. sum+=arr[j];
  16. }
  17. printf("%lld\n", sum);
  18. }
  19. return 0;
  20. }
  21.  
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