Интервалы монотонности

#pragma once
#define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES
#include <iostream>
#include <string>
#include <map>
#include <set>
#include <algorithm>
#include <vector>
#include <stdio.h>
#include <cmath>
#include <math.h>
#include <queue>
#include <stack>
#include <climits>
#include <deque>
#include <ctime>
#include <iomanip>
#include <bitset>
#include <unordered_map>
#include <unordered_set>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef unsigned int ui;

#define mh() make_heap()
#define poph() pop_heap()
#define pushh() push_heap()
#define sor(n) n.begin(), n.end()
#define rsor(n) n.rbegin(), n.rend()
#define mp make_pair
#define files freopen("input.txt", "rt", stdin); freopen("output.txt", "wt", stdout)
#define p(T) pair<T,T>
#define toch(x) cout.precision(x), cout.setf(ios::fixed)
#define znac(l) abs(l)/l
#define IOS ios::sync_with_stdio(false)
#define IOSB cin.tie(0), cout.tie(0);
const ll ok = ll(1e9 + 7);

int main()
{
    IOSB;
    IOS;
#ifdef TheCompiler
    files;
#endif
    ll a, b;
    cin >> a >> b;
    ll ls = -1;
    cin >> ls;
    char znc = '-';
    ll sc = 1;
    for (int i = a + 1; i <= b; i++)
    {
        ll p;
        cin >> p;
        if (znc == '-')
        {
            if (p > ls)
            {
                znc = '>';
            }
            else
                if (p < ls)
                {
                    znc = '<';
                }
        }
        else
            if (znc == '>')
            {
                if (p < ls)
                {
                    znc = '-';
                    sc++;
                }
            }
            else
            {
                if (p > ls)
                {
                    znc = '-';
                    sc++;
                }
            }
        ls = p;
    }
    cout << sc;
    return 0;
}