题解

#include <iostream>
using namespace std;
int main(){
int a[11],n,count=0;
for(int i =0;i<10;i++){
cin>>a[i];
}
cin>>n;
for(int i =0;i<10;i++){
if(n>=a[i] ||n+30>=a[i])count++;
}
cout<<count<<endl;
return 0;
}