Number Spiral

#include<bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    long long int t;
    cin>>t;

    while(t--)
    {
        long long int y,x;
        cin>>y>>x;

        long long int r=y;
        long long int c=x;
        if(c>r){
            if(c%2!=0){
                cout<< fixed <<((c*c)-(r-1))<<endl;
            }
            if(c%2==0){
                cout<< fixed <<((c-1)*(c-1)+1+(r-1))<<endl;
            }
        }


        if(r>c){
            if(r%2==0){
                cout<< fixed <<((r*r)-(c-1))<<endl;

            }
            if(r%2!=0){
                cout<< fixed <<(((r-1)*(r-1))+1+(c-1))<<endl;
            }
        }
        if(r==c)
        {
            if(r%2!=0)
            {
                cout<< fixed <<((r-1)*(r-1)+(c-1))<<endl;
            }
            if(r%2==0)
            {
                cout<< fixed <<((r*r)-(c-1))<<endl;
            }
        }
    }
return 0;
}