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

#define int long long
typedef pair<int,int>pint;
typedef vector<int>vint;
typedef vector<pint>vpint;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(v) (v).begin(),(v).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
template<class T,class U>inline void chmin(T &t,U f){if(t>f)t=f;}
template<class T,class U>inline void chmax(T &t,U f){if(t<f)t=f;}

bool f[22222];

signed main(){
    for(int i=0;i*i<=20000;i++){
        for(int j=0;i*i+j*j<=20000;j++){
            if(i*i+j*j>1&&i*i+j*j<=20000)f[i*i+j*j]=true;
        }
    }

    int n;cin>>n;
    while(n--){
        int a,b;cin>>a>>b;
        int c=a*a+b*b;
        bool ok=true;
        for(int i=2;i<c;i++)if(f[i]&&c%i==0){
            ok&=!f[c/i];
        }
        if(ok)cout<<"P"<<endl;
        else cout<<"C"<<endl;
    }
    return 0;
}