number_spiral.cpp

#include <bits/stdc++.h>
#define f first
#define s second

using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pii;
template <typename T1, typename T2>
ostream &operator <<(ostream &os, pair<T1, T2> p){os << p.first << " " << p.second; return os;}
template <typename T>
ostream &operator <<(ostream &os, vector<T> &v){for(T i : v)os << i << ", "; return os;}
template <typename T>
ostream &operator <<(ostream &os, set<T> s){for(T i : s) os << i << ", "; return os;}
template <typename T1, typename T2>
ostream &operator <<(ostream &os, map<T1, T2> m){for(pair<T1, T2> i : m) os << i << endl; return os;}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int T; cin >> T;
    for(int tc = 1; tc <= T; tc++){
        ll y, x; cin >> y >> x;
        ll mx = max(y, x);
        ll minx = min(y, x);
        bool b = (y>x);
        if(mx % 2 == 1){
            b = !b;
        }
        if(b){
            cout << mx*mx-minx+1 << endl;
        }else{
            cout << (mx-1)*(mx-1)+minx << endl;
        }
    }
    return 0;
}