Uva 11538 n皇后问题

题目链接：http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2533

 

P105

#include<stdio.h>#include<queue>#include<string.h>#include<iostream>using namespace std;#define ll long longint main(){ll n, m;while(cin>>n>>m, n+m){if(n>m)swap(n,m);cout<<n*m*(n+m-2)+2*n*(n-1)*(3*m-n-1)/3<<endl;}return 0;}