문제
풀이
#include <iostream>
#include <vector>
using namespace std;
bool solve(void) {
int n; cin >> n;
if (n == 0) return false;
vector<int> v(n);
for (int i=0; i<n; i++) cin >> v[i];
int ans = 0;
for (int i=1; i<n-1; i++) {
if (v[i-1] < v[i] && v[i] > v[i+1]) ans++;
}
cout << ans << "\n";
return true;
}
int main(void) {
ios::sync_with_stdio(false);
cin.tie(nullptr);
while (solve());
return 0;
}