Submission #117012

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Source Code Expand

// Enjoy your stay.

#include <bits/stdc++.h>

#define EPS 1e-9
#define INF 1070000000LL
#define MOD 1000000007LL
#define fir first
#define foreach(it,X) for(auto it=(X).begin();it!=(X).end();it++)
#define ite iterator
#define mp make_pair
#define mt make_tuple
#define rep(i,n) rep2(i,0,n)
#define rep2(i,m,n) for(int i=m;i<(n);i++)
#define pb push_back
#define sec second
#define sz(x) ((int)(x).size())

using namespace std;

typedef istringstream iss;
typedef long long ll;
typedef pair<ll,ll> pi;
typedef stringstream sst;
typedef vector<ll> vi;

int n;

int main2(){
	int ans=0;
	for(int i=2;i*i<=n;i++)if(n%i==0){
		ans=i;
		while(n%i==0)n/=i;
	}
	cout<<max(ans,n)<<endl;
	return 0;
}

int main(){
	cin.tie(0);
	ios_base::sync_with_stdio(0);
	
	while(cin>>n && n){
		main2();
	}
}

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