Säähavainnot

#include <iostream>
#include <cmath>

using namespace std;

double d[24];

void solve() {
	for (int i = 0; i < 24; i++) cin >> d[i];
	double mean = 0;
	for (int i = 0; i < 24; i++) mean += d[i];
	mean /= 24;
	double s = 0;
	for (int i = 0; i < 24; i++) s += pow(d[i] - mean, 2);

	double e = d[23];
	double m = (d[23] - d[20]) / 150;

	for (int i = 0; i < 12; i++) {
		if (s > 18) {
			if (i <= 3) {
				cout << e << " ";
				e += m;
			}
			else cout << "? ";
		}
		else cout << d[23] << " ";
	}
	cout << endl;
}

int main() {
	int n;
	cin >> n;
	while (n) {
		n--;
		solve();
	}
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED