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Feb 25th, 2020
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  1. #include <iostream>
  2.  
  3. using namespace std;
  4. long long a[107][107],n,m,i,j,k=0,abc,x,v,f,h;
  5.  
  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][j];}
  12. }
  13. cin >> f;
  14. for(i=1;i<=h;i++)
  15. {
  16. cin>>v>>x;
  17. abc+=a[v][x];
  18. a[v][x]=0;
  19. }
  20.  
  21. cout<<abc;
  22. return 0;
  23. }
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