#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(){ printf("%.3lf\n",(5+8+12)/3.0); printf("%d %d\n",39/5,39%5); printf("%d %d\n",39/8,39%8); printf("%d %d\n",39/12,39%12); return 0; }