23번

#include<iostream>
#include<vector>
using namespace std;


int main() {
	int N;
	int max = 0;
	int temp = 0;
	int sum = 1;
	cin >> N;
	vector<int> arr(N);
	for (int i = 0; i < N; i++)
	{
		cin >> arr[i];
	}
	for (int i = 0; i < N-1; i++)
	{
		if (arr[i]<=arr[i+1])
		{
			sum++;	
			temp = sum;
			if (temp > max)
			{
				max = temp;
			}
		}
		

		else {
			sum = 1;
		}
	}
	cout << max;

}