백준 2914 Java

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

public class Q2914 {

	public static void main(String[] args) throws IOException {
		BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
		String s = bf.readLine();
		StringTokenizer st = new StringTokenizer(s);
		int a = Integer.parseInt(st.nextToken());
		int i = Integer.parseInt(st.nextToken());
		System.out.println(a*(i-1)+1);
	}

}