[Atcoder Grand Contest 002] Tutorial

Link:

AGC002 传送门

A:

……

#include <bits/stdc++.h>

using namespace std;
int a,b;
int main()
{
    scanf("%d%d",&a,&b);
    if(a>0) puts("Positive");
    else if(a<=0&&b>=0) puts("Zero");
    else if((b-a)&1) puts("Positive");
    else puts("Negative"); 
    return 0;
}

Problem A