#include<iostream> using namespace std; int main(){ int a; int b; cin>>a; b=a/=91; cout<<b; return 0; }

#include<iostream> using namespace std; int main(){ int a; int b; cin>>a; b=a/=91; cout<<b; return 0; }

#include <iostream> using namespace std; int main(){ int n; cin>>n; cout<<n/91; }