[BOJ] 2163 초콜릿 자르기 (JAVA)

https://www.acmicpc.net/problem/2163

2163번: 초콜릿 자르기

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());

        System.out.print(N * M - 1);

    }

}