https://www.acmicpc.net/problem/2884
import java.util.Scanner;
class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int h = sc.nextInt(); // 시
int m = sc.nextInt(); // 분
if (m < 45) {
if (h == 0)
System.out.println("23 " + (15 + m));
else
System.out.println((h - 1) + " " + (m + 15));
} else
System.out.println(h + " " + (m - 45));
sc.close();
}
}