#include <iostream> #include <iomanip> #include <cmath> // 用于 fabs 函数 using namespace std; int main() { int n; cin >> n; double samples[305]; for (int i = 0; i < n; i++) { cin >> samples[i]; } int maxIdx = 0, minIdx = 0; for (int i = 1; i < n; i++) { if (samples[i] > samples[maxIdx]) { maxIdx = i; } if (samples[i] < samples[minIdx]) { minIdx = i; } } double sum = 0.0; for (int i = 0; i < n; i++) { if (i == maxIdx || i == minIdx) { continue; } sum += samples[i]; } double average = sum / (n - 2); double maxError = 0.0; for (int i = 0; i < n; i++) { if (i == maxIdx || i == minIdx) { continue; } double diff = fabs(samples[i] - average); if (diff > maxError) { maxError = diff; } } cout << fixed << setprecision(2) << average << " " << maxError << endl; return 0; }