#include<iostream> using namespace std; int main(){ int n,f=0; cin>>n; for(int x=0;x<=n/5;x++){ for(int y=0;y<=n/3;n++){ for(int z=0;z<=n/3;n++){ if(x+y+z==n&&5*x+3*y+z==n){ f++; cout<<f<<":"<<g<<","<<3*x<<endl; } } } } if(f==0)cout<<"None"<<endl; return 0; }