Problem:
Problem Statement

You are given two integers a and b (a≤b). Determine if the product of the integers a, a+1, …, b is positive, negative or zero.

Constraints

a and b are integers.

-10^9≤a≤b≤10^9

Partial Score

In test cases worth 100 points, -10≤a≤b≤10.

Input

The input is given from Standard Input in the following format:

a b

Output

If the product is positive, print Positive. If it is negative, print Negative. If it is zero, print Zero.

Sample Input 1

1 3

Sample Output 1

Positive

1×2×3=6 is positive.

Sample Input 2

-3 -1

Sample Output 2

Negative

(-3)×(-2)×(-1)=-6 is negative.

Sample Input 3

-1 1

Sample Output 3

Zero

(-1)×0×1=0.

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define rep(a,b,c) for(int a=b;a<c;a++)
#define repd(a,b,c) for(int a=c;a>=b;a--)
#define vi vector<int>
#define all(v) v.begin(),v.end()
#define F first
#define S second
#define pb push_back
#define pbb pop_back
const int N = 5e5+100;
const int mod=1e9+7;
const int inf=1e18;
int power(int a,int b)
{
  int ans=1;
  while(b)
  {
    if(b&1)ans*=a;
    a*=a;
    b/=2;
  }
  return ans;
}
struct node
{
  int p,z,n;
};
int add(int a, int b){return (a%mod + b%mod + mod)%mod;}
int sub(int a, int b){return (a%mod - b%mod + mod)%mod;}
int mul(int a, int b){return ((a%mod)*(b%mod) + mod)%mod;}
signed main()
{
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int T=1;
    //cin>>T;
   
    while(T--)
    {
      
                int a,b;
                cin>>a>>b;
                if(a<=0&&b>=0)
                {
                  cout<<"Zero\n";
                }
                else
                {
                  if(a>0)
                  {
                    cout<<"Positive\n";
                  }
                  else
                  {
                    a=a-b;
                    a=abs(a)+1;
                    if(abs(a)&1)
                    {
                      cout<<"Negative\n";
                    }
                    else
                    cout<<"Positive\n";
                  }
                }

     

        
        
      
      
      
    }

    
    
}