import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        boolean[] isAdds = new boolean[n];
        int[] lefts = new int[n];
        int[] rights = new int[n];
        TreeMap<Integer, Integer> compress = new TreeMap<>();
        for (int i = 0; i < n; i++) {
            isAdds[i] = (sc.nextInt() == 0);
            lefts[i] = sc.nextInt();
            rights[i] = sc.nextInt();
            if (isAdds[i]) {
                compress.put(lefts[i], null);
            }
        }
        int idx = 1;
        for (int x : compress.keySet()) {
            compress.put(x, idx++);
        }
        BinaryIndexedTree bit = new BinaryIndexedTree(idx);
        int ans = 0;
        for (int i = 0; i < n; i++) {
            if (isAdds[i]) {
                bit.add(compress.get(lefts[i]), rights[i]);
            } else {
                ans += bit.getSum(compress.ceilingEntry(lefts[i]).getValue(), compress.floorEntry(rights[i]).getValue());
            }
        }
        System.out.println(ans);
    }
}
class BinaryIndexedTree {
    int size;
    int[] tree;
    
    public BinaryIndexedTree(int size) {
        this.size = size;
        tree = new int[size];
    }
    
    public void add(int idx, int value) {
        int mask = 1;
        while (idx < size) {
            if ((idx & mask) != 0) {
                tree[idx] += value;
                idx += mask;
            }
            mask <<= 1;
        }
    }
    
    public int getSum(int from, int to) {
        return getSum(to) - getSum(from - 1);
    }
    
    public int getSum(int x) {
        int mask = 1;
        int ans = 0;
        while (x > 0) {
            if ((x & mask) != 0) {
                ans += tree[x];
                x -= mask;
            }
            mask <<= 1;
        }
        return ans;
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}