题解 | 变幻莫测 | 数据范围诈骗

#include <iostream>
using namespace std;

int main() {
    int x,y;
    cin>>x>>y;
    if(x==y)cout<<0<<"\n";
    else if(x+y==0)cout<<3<<"\n";
    else if(!x||!y){
        if(!x){
            cout<<2<<"\n";
        }else {
            cout<<1<<"\n";
        }
    }else cout<<-1<<"\n";
}
// 64 位输出请用 printf("%lld")