#include <bits/stdc++.h>

using namespace std;
using pi = array<int, 2>;
using ll = long long;
constexpr ll mod = 998244353;
using vi = vector<int>;

int ask(int u, int v) {
    cout << "? " << u + 1 << " " << v + 1 << endl;
    char re;
    cin >> re;
    return re == 'R';
}

void solve() {
    int n;
    cin >> n;
    set<int> s[2];
    vector<pi> g[2];
    for(int i = 1;i<n;++i){
        int c = ask(0,i);
        s[c].insert(i);
        g[c].push_back({0,i});
    }
    while(s[0].size() && s[1].size()){
        int x = *s[0].begin();
        int y = *s[1].begin();
        s[0].erase(x);
        s[1].erase(y);
        int c = ask(x,y);
        if(!c){
            s[0].insert(x);
            g[0].push_back({x,y});
        }
        else{
            s[1].insert(y);
            g[1].push_back({x,y});
        }
    }
    cout << "!" << endl;
    auto &z = g[0].size()==n-1?g[0]:g[1];
    for(auto[x,y] : z){
        cout << x + 1 << " " << y + 1 << endl;
    }
}

int main() {
    cin.tie(0)->sync_with_stdio(false);
    int t = 1;
//    cin >> t;
    while (t--)solve();
}