题解

#include <bits/stdc++.h>
using namespace std;
int a1,a2,a3,a4,a5,a6,a7,a8,a9,a0,b,c=0;
int main() {
cin>>a1>>a2>>a3>>a4>>a5>>a6>>a7>>a8>>a9>>a0>>b;
b=b+30;
if(a1<=b)c++;
if(a2<=b)c++;
if(a3<=b)c++;
if(a4<=b)c++;
if(a5<=b)c++;
if(a6<=b)c++;
if(a7<=b)c++;
if(a8<=b)c++;
if(a9<=b)c++;
if(a0<=b)c++;
cout<<c;
return 0;
}