Zigzag

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main()
{
	cin.sync_with_stdio(false);	
	
    int n;
    cin>>n;
    
    int v[n];
    for (int i = 0; i < n; i++) cin>>v[i];
    
    int m = 0, s = 0;
    for (int i = 1; i < n - 1; i++) {
        if ((v[i - 1] < v[i] && v[i] > v[i + 1] )||( v[i - 1] > v[i] && v[i] < v[i + 1])) s++;
        else { m = max(m, s); s = 0; }
        m = max(m, s);
    }
    m = max(m, s);
    cout<<m<<endl;

	return 0;
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: WRONG ANSWER

Test 17

Verdict: WRONG ANSWER

Test 18

Verdict: WRONG ANSWER

Test 19

Verdict: WRONG ANSWER

Test 20

Verdict: WRONG ANSWER

Test 21

Verdict: WRONG ANSWER

Test 22

Verdict: WRONG ANSWER

Test 23

Verdict: WRONG ANSWER