#include <bits/stdc++.h>
#define inf 1000000000ll
using namespace std;
using ll = long long;


ll isqrt(ll n){
    ll ok = 0;
    ll ng = inf + 1;
    while(abs(ok - ng) > 1){
        ll mid = (ok + ng) >> 1;
        if(mid * mid <= n){
            ok = mid;
        }
        else{
            ng = mid;
        }
    }
    return ok;
}


int main(){
    int t;  cin >> t;
    for(int i = 0; i < t; ++i){
        ll n;   cin >> n;
        ll k = isqrt(n);
        if(k * k == n){
            cout << 'P' << endl;
        }
        else{
            cout << 'K' << endl;
        }
    }

    return 0;
}