C++ BAEKJOON 25304번 영수증

[C++] BAEKJOON 25304번 : 영수증

 

#include <iostream>
using namespace std;


int main()
{

	ios_base::sync_with_stdio(false);
	//cin.tie(NULL);

	int x, n, a, b, sum = 0;

	cin >> x >> n;

	for (int i = 0; i < n; i++) {
		cin >> a >> b;
		sum += a * b;
	}

	if (x == sum) {
		cout << "Yes";
	}
	else {
		cout << "No";
	}


	return 0;
}