#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 a=5,b=8,p=12; printf("%.3lf\n",(a+b+p)/3.0); int c=39/a,d=39/b,e=39/p; cout<<c<<" "<<39-c*a<<endl<<d<<" "<<39-d*b<<endl<<e<<" "<<39-e*p; return 0; }