#include <bits/stdc++.h>
using namespace std;


int isqrt(int n){
    int ok = 0;
    int ng = 32;
    while(abs(ok - ng) > 1){
        int 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){
        int n;   cin >> n;
        int k = isqrt(n);
        char ans = (k * k == n) ? 'P' : 'K';
        cout << ans << endl;
    }

    return 0;
}