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| #include <bits/stdc++.h>
#define int long long
#define N 1000005
#define IOS ios::sync_with_stdio(0),cin.tie(0)
using namespace std;
int n;
signed main(){
IOS;
cin>>n;
while(n--){
int x,y;cin>>x>>y;
int ly = max(x,y)-1,st = ly*ly;
if(!(ly % 2)){
if(y < ly+1)cout<<st+y<<endl;
else cout<<(st+ly+1)+(ly+1-x)<<endl;
}
else{
if(x < ly+1)cout<<st+x<<endl;
else cout<<(st+ly+1)+(ly+1-y)<<endl;
}
}
}
|