#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pi pair<int, int>
#define vi vector<int>
#define vs vector<string>
#define vb vector<bool>
#define vpi vector<pi>
#define pb push_back
#define all(a) (a).begin(), (a).end()
const int mod = 1e9 + 7;
const int N = 1e5 + 5;
int par[N];
int siz[N];
void make(int x)
{
par[x] = x;
siz[x] = 1;
}
int find(int x)
{
if (x == par[x])
{
return x;
}
return par[x] = find(par[x]);
}
void join(int a, int b)
{
a = find(a);
b = find(b);
if (a != b)
{
if (siz[a] < siz[b])
{
swap(a, b);
}
par[b] = a;
siz[a] += siz[b];
}
}
signed main()
{
ios_base::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
int n, q;
cin >> n >> q;
for (int i = 1; i <= n; i++)
{
make(i);
}
while (q--)
{
char c;
int a, b;
cin >> c >> a >> b;
if (c == 'Q')
{
cout << (find(a) == find(b) ? "R\n" : "?\n");
}
else
{
join(a, b);
}
}
}
