/* 中位數 */ #include #include #include #include using namespace std; int main() { cin.tie(0); ios_base::sync_with_stdio(0); int n; while ((cin >> n)) { vector number(n, 0); unordered_map counter; for (int i = 0; i < n; i++) { cin >> number[i]; counter[number[i]]++; } sort(number.begin(), number.end()); int mid = (number.size() - 1) / 2; if (number.size() & 1) cout << number[mid] << " " << counter[number[mid]] << " 1\n"; else { int temp = 0; for (int i = number[mid]; i <= number[mid + 1]; i++) temp += counter[i]; cout << number[mid] << " " << temp << " " << number[mid + 1] - number[mid] + 1 << "\n"; } } }