#include <iostream>
#include <map>
#include <functional>
#include <stdio.h>

struct hoge {
    long ans;
    int a;
    int b;
    std::map<int,int> imp;
    void calc(int q) {
        static std::map<int,std::function<void ()>> table = {
            {0, [this](){imp[a]+=b;}},
            {1, [this](){for (int i=a;i<=b;i++) ans+=imp[i];}},
        };
        table[q]();
    };
};

int main() {
    int q;
    int c;

    struct hoge Hoge;
    Hoge.ans = 0;

    scanf("%d",&c);
    for (int i=0;i<c;i++) {
        scanf("%d %d %d",&q,&(Hoge.a),&(Hoge.b));
        Hoge.calc(q);
    }
    printf("%ld\n",Hoge.ans);
}