cpp

 long long m,n,q,x,y,k;
        cin>>m>>n>>q;

        for(long long i = 0;i<q;++i){
            cin>>x>>y>>k;
            long long y1,x1,x2,sum;
            sum = 0;
            for(long long j =0;j<=k;++j){
                y1 = y + k - j;

                x1 = max(x -  j,(long long)0);
                x2 = min(x + j, m);


                if(y1>n || y1<0) {
                    continue;
                }
//cout<<y1<<" "<<x1<<" "<<x2<<endl;
                sum += x2 - x1 +1;

            }


            for(long long j =1;j<=k;++j){
                y1 = y - j;

                x1 = max(x - k + j,(long long)0);
                x2 = min(x + k - j, m);


                if(y1>n || y1<0) {
                    continue;
                }

                sum += x2 - x1 +1;
//cout<<y1<<" "<<x1<<" "<<x2<<endl;
            }
            cout<<sum<<endl;

        }