哪里错了？？？为什么一分都没有o(╥﹏╥)o

#include<iostream>
using namespace std;
int main(){
	int n;
	cin>>n;
	int m[n];
	for(int i = 0;i < n;i++){
		cin >> m[i];
	}
	int r = 1,ans = 0;
	while(r < n -1){
		if(m[r-1] > m[r]){
			while(m[r+1] <= m[r]){
				r++;
			}
			ans++;
		}
		r++;
	}
	cout << endl << ans;
	return 0;
}