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57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
#define _CRT_SECURE_NO_WARNINGS
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#define _SILENCE_CXX17_C_HEADER_DEPRECATION_WARNING
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#include <bits/stdc++.h>
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using namespace std;
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const int N = 2e5 + 50;
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int a[N];
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int main()
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{
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/* int n;
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scanf("%d", &n);
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for (int i = 1; i <= n; i++)
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scanf("%d", a + i);
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a[0] = a[n + 1] = 0x3f3f3f3f;
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int cnt = 0;
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for (int i = 1; i <= n; i++)
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if (a[i - 1] <= a[i] && a[i] >= a[i + 1])
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cnt++;
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cout << cnt;
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return 0;*/
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int n;
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scanf("%d", &n);
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int d = 0, last = 2147483640, os = 1;
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for (int i = 1; i <= n; i++)
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{
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int s;
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scanf("%d", &s);
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if (os == 1)
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{
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if (last > s)
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{
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last = s;
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}
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else
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{
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os = 2;
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last = s;
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d++;
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continue;
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}
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}
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else if (os == 2)
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{
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if (last < s)
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{
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last = s;
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}
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else
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{
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os = 1;
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last = s;
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}
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}
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}
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printf("%d\n", d);
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return 0;
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}
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