#include <bits/stdc++.h>
#include <chrono>
#define ll long long int
#define endl '\n'
#define vn vector<ll>
#define vi vector<pair <ll,ll>>
using namespace std;
using namespace std::chrono;
const int MAX_N = 1e9 + 7;
#define pii pair<ll,ll>
const ll INF = 0x3f3f3f3f3f3f3f3f;
#define pb push_back
#define srt(vp) sort(vp.begin(), vp.end())
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
auto start = high_resolution_clock::now();
ll n,q;
cin>>n>>q;
ll check = false;
ll num;
for (int i=0;i<q;i++){
char a;
ll b,c;
cin>>a>>b>>c;
if (!check){
if (a=='Q')cout<<"?"<<endl;
else if (a=='A'){
num = 1;
check = true;
}
else {
num = 2;
check=true;
}
}
else{
if (a=='Q'){
if (num==1)cout<<'A'<<endl;
else if (num==2) cout<<'R'<<endl;
}
}
}
auto stop = high_resolution_clock::now();
auto duration = duration_cast<microseconds>(stop - start);
//cout << "Time taken by function: " << duration.count() << " microseconds" << endl;
return 0;
}
