SolarSystem

#include <iostream>
#include <unordered_map>
#include <cmath>
#include <string>
using namespace std;
                                         // Solar System
struct dat
{
    double distance;
    int days;
};

int main()
{
    dat d;
    unordered_map<string, dat> umap;
    d.distance = 0.61;
    d.days = 7;
    umap.emplace("Mercury", d);
    d.distance = 0.28;
    d.days = 14;
    umap.emplace("Venus", d);
    d.distance = 0.52;
    d.days = 20;
    umap.emplace("Mars", d);
    d.distance = 4.2;
    d.days = 5;
    umap.emplace("Jupiter", d);
    d.distance = 8.52;
    d.days = 3;
    umap.emplace("Saturn", d);
    d.distance = 18.21;
    d.days = 3;
    umap.emplace("Uranus", d);
    d.distance = 29.09;
    d.days = 2;
    umap.emplace("Neptune", d);
    string planet;
    getline(cin, planet);
    unordered_map<string, dat>::iterator it = umap.find(planet);
    if (it == umap.end())
    {
        printf("Invalid planet name!\n");
        return 0;
    }
    int days;
    cin >> days;
    if ((days < 1) || (days > umap[planet].days))
    {
        printf("Invalid number of days!\n");
        return 0;
    }
    double totaldays = 226 * 2 * umap[planet].distance + days;
    printf("Distance: %.2f\nTotal number of days: %.2f\n", 2 * umap[planet].distance, totaldays);
    return 0;
}