https://www.acmicpc.net/problem/10930
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Scanner;
public class Main {
public static void main(String[] args) throws NoSuchAlgorithmException {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
String input = sc.nextLine();
MessageDigest md = MessageDigest.getInstance("SHA-256");
md.update(input.getBytes());
StringBuilder sb = new StringBuilder();
for(byte b: md.digest()) {
sb.append(String.format("%02x", b));
}
System.out.println(sb.toString());
}
}