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- #include <iostream>
- using namespace std;
- long long a[107][107],n,m,i,j,k=0,abc,x,v,f,h;
- int main()
- {
- cin >> n>>m;
- for(i=1; i<=n; i++){
- for(j=1; j<=m; j++){
- cin >>a[i][j];}
- }
- cin >> f;
- for(i=1;i<=h;i++)
- {
- cin>>v>>x;
- abc+=a[v][x];
- a[v][x]=0;
- }
- cout<<abc;
- return 0;
- }
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