a

#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int n=0; int a=0; cin>>n; for(int x=0;x<=n/5;x++){ for(int y=0;y<=n/3;y++){ for(int z=0;z<=n/3;z++){ if(x+y+z*3==n&&x*5+y*3+z==n){ a++; cout<<a<<": "<<x<<','<<y<<','<<z<<endl; } } } } if(a==0) cout<<"None"<<endl; } return 0; }