[백준] 25304 영수증

https://www.acmicpc.net/problem/25304

25304번: 영수증

 

방법1 

BufferedReader

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

public class Recipe {
	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st;
		int total = Integer.parseInt(br.readLine());
		int type = Integer.parseInt(br.readLine());;
		
		int sum = 0;
		for(int i = 0; i < type; i++) {
			st = new StringTokenizer(br.readLine());
			sum += Integer.parseInt(st.nextToken())*Integer.parseInt(st.nextToken());
		}
		
		if(total == sum) {
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}

		br.close();

	}

}