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Feb 25th, 2020
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4. long long a[110][110];
  5. long long n,i,j,r,c,s,x,m;
  6. int main()
  7. {
  8. cin>>n>>m;
  9. for(i=1; i<=n; i++){
  10. for(j=1; j<=m; j++){
  11. cin>>a[i]>>a[j];
  12. }
  13. }
  14. cin>>x;
  15. for(i=1; i<=x; i++){
  16. cin>>r>>c;
  17. s+=a[r][c];
  18. a[r][c]=0;
  19. }
  20. cout<<s;
  21. return 0;
  22. }
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