两种！！全部AC！！

这里也是写了两种解法啊！！！
First One

#include <bits/stdc++.h>
//#include <iostream>
using namespace std;

int main() {
	int a, b;
	cin >> a >> b;

	bool can_eat = false;

	for (int i = 0; i < 3; i++) {
		int x, y;
		cin >> x >> y;

		if ((b / y) * x >= a) {
			cout << "YES" << endl;

			can_eat = true;
			break;
		}
	}

	if (!can_eat) {
		cout << "NO" << endl;
	}

	return 0;
}

极致格式+不怕aac

Second One

#include <bits/stdc++.h>
//#include <iostream>
using namespace std;

int main() {
	int a, b, x1, y1, x2, y2, x3, y3;
	cin >> a >> b;
	cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;
	
	if ((b / y1) * x1 >= a)
		cout << "YES" << endl;

	else if ((b / y2) * x2 >= a)
		cout << "YES" << endl;

	else if ((b / y3) * x3 >= a)
		cout << "YES" << endl;

	else
		cout << "NO" << endl;

	return 0;
}

2. cstdio格式

First One

#include <bits/stdc++.h>
//#include <cstdio>
using namespace std;

int main() {
	int a, b;
	scanf("%d %d", &a, &b);

	bool can_eat = false;

	for (int i = 0; i < 3; i++) {
		int x, y;
		scanf("%d %d", &x, &y);

		if ((b / y) * x >= a) {
			printf("YES\n");

			can_eat = true;
			break;
		}
	}

	if (!can_eat) {
		printf("NO\n");
	}

	return 0;
}

Second One

#include <bits/stdc++.h>
//#include <cstdio>
using namespace std;

int main() {
	int a, b, x1, y1, x2, y2, x3, y3;
	scanf("%d %d \n%d %d \n%d %d \n%d %d", &a, &b, &x1, &y1, &x2, &y2, &x3, &y3);
	
	if ((b / y1) * x1 >= a)
		printf("YES\n")

	else if ((b / y2) * x2 >= a)
		printf("YES\n")

	else if ((b / y3) * x3 >= a)
		printf("YES\n")

	else
		printf("NO\n")

	return 0;
}

第一次写题解，不要喷我。