#include using namespace std; int gcd(int a,int b){ int ans=a%b; if(ans==0) return b; else return gcd(b,ans); } int main(){ int l; cin>>l; l/=4; int ans=0; int m,n; for(m=2;ml) break; if(gcd(m,n)!=1) continue; ans++; } } cout<