>>145

#include <iostream>

int main(void){
double k;
int g;

std::cout << "気温を入力：";
std::cin >> k;
g = k / 2.5;
g += g % 2;
g = g / 2 * 5;
std::cout << "気温は約" << g << "℃です。" << std::endl;
return 0;
}