#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() { double sum = 0; double a; for (int i = 0; i < 12; i++) { cin >> a; sum +=a; } sum /= 12; cout <<a<< setprecision(2) << "￥" << sum << endl; return 0; }