fork download 
  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. int main(){
  6.     int N;
  7.     int C = 1;
  8.     cin >> N;
  9.     vector<int> S(N);
  10.     vector<int> E(N);
  11.  
  12.     for(int i = 0; i < N; i++){
  13.         cin >> S[i] >> E[i];
  14.     }
  15.  
  16.     for(int i = 1; i < N; i++){
  17.        if(S[i] >= E[i-1]){
  18.         C++;
  19.        }else{
  20.         E[i] = E[i-1];
  21.        }
  22.     }
  23.  
  24.     cout << C;
  25.  
  26. }
Success #stdin #stdout 0.01s 5276KB
comments (?)
stdin 
5
10 30
20 40
30 60
40 80
60 100
stdout 
3
https://ideone.com/uovIjk
language:
C++ (gcc 8.3)
created:
15 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!