Binge watching

#include <iostream>
#include <vector>
int main(){
  int n;
  std::cin >> n;
  std::vector<std::pair<int, int>> intervals(n);
  for (int i = 0; i<n; ++i){
    std::cin >> intervals[i].first >> intervals[i].second;
  }

  int prevEnd = intervals[0].second;
  int count = 1;
  for (int i = 1; i<n; ++i){
    if (intervals[i].first>=prevEnd){
      prevEnd = intervals[i].second;
      count++;
    }
  }

  std::cout << count << "\n";
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: ACCEPTED

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: ACCEPTED

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED