#include <bits/stdc++.h>

int main(){
    using namespace std;

    unordered_map<unsigned long, unsigned long> segtree;
    unsigned long max_n{1};

    const auto& set = [&segtree, &max_n](unsigned long i, unsigned long a) -> void {
        (i *= 2) += 1;
        while(__builtin_popcount(i) != 1){
            segtree[i] += a;
            auto k = i ^ (i - 1);
            k ^= k >> 1;
            i ^= k;
            i |= k << 1;
        }
        do{
            segtree[i] += a;
            i <<= 1;
        }while(i <= max_n);
        max_n = i >> 1;
    };
    const auto& fold = [&segtree, &max_n](unsigned long l, unsigned long r) -> unsigned long {
        (l *= 2) += 1;
        (r *= 2) += 1;
        unsigned long k{2}, ret{0};
        while(l != r){
            if(l & k){
                if(segtree.count(l))ret += segtree[l];
                l += k;
            }
            if(r & k){
                r -= k;
                if(segtree.count(r))ret += segtree[r];
            }
            l += k >> 1;
            r += k >> 1;
            k <<= 1;
        }
        return ret;
    };

    unsigned long n;
    cin >> n;
    unsigned long ans{0};
    for(unsigned long _ = 0, c, x, y; _ < n; ++_){
        cin >> c >> x >> y;
        if(c)ans += fold(x, y + 1);
        else set(x, y);
    }
    cout << ans << endl;

    return 0;
}