#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 b=5,a=8,g=12; printf("%.3lf",(b+a+g)/3.0); printf("%ld %ld\n",39/b,39%b); printf("%ld %ld\n",39/a,39%a); printf("%ld %ld\n",39/g,39%g); return 0; }