#include <stdio.h> int main() { int score = 0, max = 0, min = 100, sum = 0, count = 0; while (scanf("%d", &score) != EOF) { if (score > max) max = score; if (score < min) min = score; sum += score; count++; if (count == 7) { printf("%.2f\n", (sum - max - min) / 5.0); max = 0, min = 100, sum = 0, count = 0; } } return 0; }