백준 25304 영수증

 

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

25304번: 영수증

 

 

 

import java.util.Scanner;

public class Main{
       
   public static void main(String[] args) {
	   
	   Scanner sc = new Scanner(System.in);
		
	    int X = sc.nextInt();
	    int N = sc.nextInt();
	    
	    int sum = 0;
	    
	    for(int i = 0 ; i < N ; i++) {
	    	int a = sc.nextInt();
	 	    int b = sc.nextInt();
	 	    sum += a*b;
	    }
	    
	    if( X == sum) {
	    	System.out.println("Yes");
	    }else {
	    	System.out.println("No");
	    }
	  

	    sc.close();
    }
    
}