[BOJ] 27512 스네이크 (JAVA)

https://www.acmicpc.net/problem/27512

27512번: 스네이크

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
	
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine(), " ");
        int n = Integer.parseInt(st.nextToken());
        int m = Integer.parseInt(st.nextToken());

        if (n % 2 == 1 && m % 2 == 1) System.out.println(n * m - 1);
        else System.out.println(n * m);
    }
	
}