Submission #1690647

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;

int a[100005]={0};

int main(){
    int n;
    cin >> n;
    for(int i=0;i<n;++i)cin >> a[i];

    int ans = 0;
    bool inc = false, dec = false;
    for(int i=1;i<n;++i){
        if(!inc && !dec){
            if(a[i] < a[i-1])dec = true;
            else if(a[i] > a[i-1])inc = true;
        }else if(inc){
            if(a[i] < a[i-1]){
                ans++;
                inc = false;
            }
        }else if(dec){
            if(a[i] > a[i-1]){
                ans++;
                dec = false;
            }
        }
    }
    ans++;

    cout << ans << endl;

    return 0;
}

Submission Info

Judge Result