#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,b,c,d; cout<<8.333<<endl; cout<<7<<" "<<4<<endl; cout<<4<<" "<<7<<endl; cout<<3<<" "<<3<<endl; return 0; }