Submission #1221354

---

Source Code Expand

#include <cstdio>
#include <iostream>
#include <string>
#include <cstring>
#include <vector>
#define oo 987654321
#define INT long long
using namespace std;

int n, a[100010], ans = 1, d;

int main()
{
    ios::sync_with_stdio(false);
    cin>>n;
    for(int i = 0 ; i < n ; i++ ) cin>>a[i];
    if( n <= 2 ) return cout<<1<<endl, 0;
    for(int i = 0 ; i < n-2 ; i++ )
    {
        if( a[i] > a[i+1] and a[i+1] < a[i+2] ) ans++, i++;
        else if( a[i] < a[i+1] and a[i+1] > a[i+2] ) ans++, i++;
    }
    cout<<ans<<endl;
    return 0;
}

Submission Info

Judge Result