#include <iostream>
#include <vector>
using namespace std;
int main(){
	vector<long long> sosuuList;
	for(long long i = 2; i <= 1000000; i++){
		bool isPrime = true;
		for(long long j = 2; j * j <= i; j++){
			if(i % j == 0){
				isPrime = false;
				break;
			}
		}
		if(isPrime){
			sosuuList.push_back(i);
		}
	}
	
	long long n, nCopy, count = 0;
	cin >> n;
	nCopy = n;
	
	if(n == 1){
		cout << 1;
		return 0;
	}
	for(long long i = 0; i < (long long)sosuuList.size(); i++){
		if(n % (sosuuList[i] * sosuuList[i]) == 0){
			cout << 0;
			return 0;
		}else if(nCopy % sosuuList[i] == 0){
			nCopy /= sosuuList[i];
			count++;
		}
	}
	if(count % 2 == 0){
	  cout << 1;
	}else{
	  cout << -1;
	}
	return 0;
}