hdu1194-Beat the Spread!

http://acm.hdu.edu.cn/showproblem.php?pid=1194

理解题意

#include<iostream>#include<cstring>#include<cstdio>using namespace std ;int main(){int Case ;int m , n;int a , b ; cin >> Case ;while( Case-- ){cin >> m >> n ;if( m < n )cout << "impossible" << endl ;else if( ( m + n ) % 2 != 0)cout << "impossible" << endl ;else{a = ( m + n ) / 2 ;b = ( m - n ) / 2 ;if( a < b )int t = a , a = b , b = t ;cout << a << " " << b << endl ; }}return 0 ;}