#include<iostream>
#include<string>
#include<cstring>
#include<iomanip>
#include<algorithm>
#include<cmath>
#define ll long long
using namespace std;
struct stu{
    ll l,r;
}a[31400000];
ll n,ctrl,k,tail=1;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>ctrl;
        switch(ctrl){
            case 1:
                cin>>a[tail].l>>a[tail].r;
                tail++;
                break;
            case 2:
                cin>>k;
                ll sum=0;
                while(k>0){
                    if(k-(a[tail].r-a[tail].l)>0){
                        sum+=(a[tail].l+a[tail].r)*(a[tail].r-a[tail].l+1)/2;
                        k-=a[tail].r-a[tail].l;
                    }else{
                        sum+=(a[tail].l+k)*(k-a[tail].l+1)/2;
                    }
                    tail--;
                }
                cout<<sum<<endl;
                break;
        }
    }
    return 0;
}