#include <iostream> using namespace std; int main(){ int n,a,b,c,d,t=1; scanf("%d",&n); for(a=0;a<=n/5;a++){ //公鸡 for(b=0;b<=n/3;b++){ //母鸡 for(c=0;c<=n;c++){ //小鸡 if(a+b+c==n && c%3==0 && a*5+b*3+c/3==n){ printf("%d: %d,%d,%d\n",t,a,b,c); t++; } } } } if(t==1){ cout<<"None"; } }