1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
#include <iostream>

using namespace std;

int main()
{
    int n;
    int c=0;
    int i=1;
    int typMR = 0;
    int typRM = 0;
    cin >> n;
    int tab[n];
    for (int k=0;k<n;k++)
    {
        cin >> tab[k];
    }
    for (int k=1;k<n;k++)
    {
        if (k%2==0)
        {
            if(tab[k]>=tab[k-1])
            {
                typMR++;
            }
            else
            {
                typRM++;
            }
        }
        else
        {
            if(tab[k]>=tab[k-1])
            {
                typRM++;
            }
            else
            {
                typMR++;
            }
        }
    }
    if (typMR>=typRM)
    {
        while (i<n)
            {
                if(tab[i]>=tab[i-1] || tab[i]>=tab[i+1])
                {
                    c++;
                }
                i +=2;
            }
    }
    else
    {
        while (i<n)
            {
                if(tab[i]<=tab[i-1] || tab[i]<=tab[i+1])
                {
                    c++;
                }
                i +=2;
            }
    }
    cout << c;
}