[백준 Java] 반복문 - 25304번: 영수증

 

 

import java.io.*;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;

        int total = Integer.parseInt(br.readLine());
        int n = Integer.parseInt(br.readLine());
        int a, b;
        int sum = 0;

        for (int i = 1; i <= n; i++) {
            st = new StringTokenizer(br.readLine());
            a = Integer.parseInt(st.nextToken());
            b = Integer.parseInt(st.nextToken());

            sum += a * b;
        }
        if (total == sum) {
            bw.write("Yes");
        } else {
            bw.write("No");
        }

        bw.flush();
        bw.close();
        br.close();
    }
}