#include <bits/stdc++.h>
#define int long long
#define x first
#define y second
#define pb push_back
using namespace std;
using pii=pair <int,int>;
void solve(){
    int n;
    cin>>n;
    vector <pair <int,int> > er,eb;
    vector <int> r,b;
    for (int i=2; i<=n; i++){
        cout<<"? 1 "<<i<<endl;
        char c; cin>>c;
        if (c=='R') er.pb({1,i}),r.pb(i);
        else eb.pb({1,i}),b.pb(i);
    }
    int px=0,py=0;
    while (px<r.size()&&py<b.size()){
        cout<<"? "<<r[px]<<' '<<b[py]<<endl;
        char c; cin>>c;
        if (c=='R'){
            er.pb({r[px],b[py]});
            py++;
        } else {
            eb.pb({r[px],b[py]});
            px++;
        }
    }
    cout<<'!'<<endl;
    if (er.size()==n-1){
        for (pii i:er) cout<<i.x<<' '<<i.y<<endl;
    } else {
        for (pii i:eb) cout<<i.x<<' '<<i.y<<endl;
    }
}
signed main(){
    //ios_base::sync_with_stdio(0); cin.tie(0);
    int t=1;
    //cin>>t;
    while (t--) solve();
}