#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;
#define trav(a, x) for(auto& a : x)
#define FOR(i, a, b) for (int i=(a); i<=(signed)(b); i++)
#define ROF(i, a, b) for (int i=(a); i>=(signed)(b); i--)
#define F0R(i, a) for (int i=0; i<(signed)(a); i++)
#define vi vector<int>
#define f first
#define s second
#define all(v) (v).begin(), (v).end()
typedef long long ll;
using pii = pair<int, int>;

const ll mod = 1e9 + 7;

void pans(vector<pii> a) {
    cout << "!\n";
    trav(u, a) {
        cout << u.first << " " << u.second << endl;
    }
}

int main() 
{	
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n; cin >> n;
    vector<pii> red, blue;
    vector<int> b, r;
    F0R(i, n-1) {
        cout << "? " << 1 << " " << i+2 << endl;
        char c; cin >> c;
        if(c=='R') {
            red.emplace_back(1,i+2);
            r.push_back(i+2);
        } 
        else {
            blue.emplace_back(1, i+2);
            b.push_back(i+2);
        }
    }
    
    int i = 0, j = 0;
    if(r.size()==0) {
        pans(blue);
        return 0;
    }
    if(b.size()==0) {
        pans(red);
        return 0;
    }
    while(i < r.size()&& j < b.size()) {
        cout << "? " << r[i] << " " << b[j] << endl;
        char c; cin >> c;
        if(c=='R') {
            red.emplace_back(r[i], b[j]);
            j++;
        }
        else {
            blue.emplace_back(r[i], b[j]);
            i++; 
        }
    }
    if(red.size()==n-1) {
        pans(red);
        return 0;
    }
    if(blue.size()==n-1) {
        pans(blue);
        return 0;
    }
    return 0;
}