[브론즈 II] 1225번 :: 이상한 곱셈 / Java

 

 

 

 

문제

https://www.acmicpc.net/problem/1225

1225번: 이상한 곱셈

 

 

 

 

 

코드

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

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        String a = st.nextToken();
        String b = st.nextToken();
        long answer = 0l;

        for(int i=0; i<a.length(); i++) {
            for(int j=0; j<b.length(); j++) {
                answer += (a.charAt(i)-'0') * (b.charAt(j)-'0');
            }
        }

        System.out.println(answer);
    }
}