#include <bits/stdc++.h>

#define ll long long
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);
#define fr(i, n) for(ll i =0;i<n;i++)
#define INF (long long) 1e30
using namespace std;

int main() {
    int n;
    cin >> n;
    set<pair<ll,ll>> b;
    set<pair<ll,ll>> e;
    for(int i =0;i<n;i++)
    {
        char r;
        cin>>r;
        if(r == 'B')
        {
            int l ,r;
            cin>>l>>r;
            r = l + r;
            auto j = b.lower_bound({l,10000000});
            bool jf = 0;
            if(j != b.begin())
            {
                if((*j).second > r)
                {
                    jf = 1;
                }
            }
            auto z = e.upper_bound({r,-100000000});
            if(z != e.end())
            {

            }
        }
    }


}