#include<iostream>

using namespace std;

int main(){
    int apples[10];
    int high;
    int numA=0;

    cin>>high;
    high=high+30;
    
    for(int i=0;i<10;i++){
        cin>>apples[i];
    }
      
    for(int i=0;i<10;i++){
         if(apples[i]<=high)
            numA++;
            
    }
    
    cout<<numA;

return 0;
}