#include <cstdio>
int main(){
int n,m,x,y;
while(~scanf("%d%d%d%d",&n,&m,&x,&y)){
if(2*x==n&&2*y==m)puts("YES");else puts("NO");
}return 0;
}
时间： 2024-11-20 07:47:30
HDU 5054 Alice and Bob
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