可能是低级错误，勿喷谢谢

#include<bits/stdc++.h>
using namespace std;
const int maxn = 11;
int a[maxn];
int main(){
	int n,m,sum;
	for(int i = 1;i <= 10;i++){
		cin >> a[i];
	}
	cin >> n;
	m = n+30;
	for(int i = 1;i <= 10;i++){
	    if(a[i] <= m){
			sum++;
		}
	}
	cout << sum << endl;
	return 0;
}