c++信息学奥赛 1056点和正方形的关系
#include <iostream>
using namespace std;
int main()
{
int x,y;
cin>>x>>y;
if(x>=-1&&x<=1&&y>=-1&&y<=1) cout<<"yes";
else cout<<"no";
return 0;
}
#include <iostream>
using namespace std;
int main()
{
int x,y;
cin>>x>>y;
if(x>=-1&&x<=1&&y>=-1&&y<=1) cout<<"yes";
else cout<<"no";
return 0;
}