passed all the tests: int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */ int q,i; string x; int y; int a; map m; cin>>q; for(i=0;i

    cin>>a;
    cin>>x;

    if(a==1){
    cin>>y;
        map<string, int>::iterator itr=m.find(x);
   if (itr==m.end()){
        m.insert(make_pair(x,y));
        }
        else { m[x]+=y;}

    }
    else if(a==2){
        m.erase(x);
    }
    else if(a==3){
        map<string, int>::iterator itr=m.find(x);
   if (itr==m.end()){
            cout<<"0"<<endl;
        }
        else
            cout<<m[x]<<endl;

    }
    else break;


}
return 0;

}