#include<bits/stdc++.h>
using namespace std;
int main(){
long n, sum, i;
while(cin >> n != EOF)
{
cout << "在之间的阶梯数为" << endl;
sum = 0;
for (i = 7; i < =n; i ++)
if(i % 7 == 0)
if(i % 6 == 5)
if(i % 5 == 4)
if(I %4 == 3)
if(i % 3 == 2)
{
sum ++;
cout << i;
}
cout << n << " " << sum << endl;
}
}