Submission #1222177

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Source Code Expand

#include <iostream>
#include <vector>
using namespace std;
int main(){
  int n;
  cin >> n;
  vector<int> a(n);
  for(auto& x: a)
    cin >> x;
  int ans = 1;
  bool zouka;
  if(a[0] < a[1])
    zouka = true;
  else
    zouka = false;

  for(int i = 1; i < n-1; i++){
    if(zouka){
      if(a[i] < a[i+1]){
        continue;
      }else{
        // 次は増加列かそうでないかを確認する
      }
    }else{
      if(a[i] >= a[i+1]){
        continue;
      }else{
        // 次は増加列かそうでないかを確認する
      }
    }
    ans++;
    if(i < n-2){
      if(a[i+1] < a[i+2])
        zouka = true;
      else
        zouka = false;
    }
  }
  cout << ans << endl;
}

Submission Info

Judge Result