Säähavainnot

#include <iostream>
#include <vector>
#include <iomanip>
#include <cmath>
 
using namespace std;
 
// Function to calculate the predicted temperature for the next 12 hours
vector<string> predictTemperatures(const vector<double>& temperatures) {
    vector<string> predictions(12, "?"); // Initialize with "?"
    
    // Predict for each hour from 12 to 23
    for (int hour = 0; hour < 12; ++hour) {
        double sum = 0.0;
        double count = 0.0;
 
        // Calculate the average of the corresponding hour from the last 24 hours
        for (int j = hour + 12; j < 24; j++) { // Last 12 hours for current prediction
            sum += temperatures[j];
            count++;
        }
 
        // Check the previous hours from today to make predictions
        for (int j = hour; j < 12; j++) {
            sum += temperatures[j];
            count++;
        }
 
        if (count > 0) {
            double mean = sum / count;
 
            // Using a simple moving average for each hour
            predictions[hour] = to_string(mean);
            predictions[hour].erase(predictions[hour].find('.') + 2); // Keep one decimal
        }
    }
 
    return predictions;
}
 
int main() {
    int n; // Number of days
    cin >> n;
 
    for (int i = 0; i < n; i++) {
        vector<double> temperatures(24);
        for (int j = 0; j < 24; j++) {
            cin >> temperatures[j];
        }
 
        // Predict the next 12 hours (hours 12–23)
        vector<string> predictions = predictTemperatures(temperatures);
 
        // Print predictions
        for (int j = 0; j < 12; j++) {
            cout << fixed << setprecision(1) << predictions[j] << " ";
        }
        cout << endl;
    }
 
    return 0;
}

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