#include <bits/stdc++.h>

using namespace std;
const int N = 10010;
typedef long long LL;
struct Person {
    int left, right;
} person[N];
int n;

bool cmp(const Person &a, const Person &b) {
    return a.left * a.right < b.left * b.right;
}

int main() {
    cin >> n;
    //输入
    for (int i = 0; i <= n; i++)
        cin >> person[i].left >> person[i].right;
    //排序，注意国王不参加排序
    sort(person + 1, person + 1 + n, cmp);

    LL lcj = 1;//连乘积
    LL res = 0;
    for (int i = 0; i <= n; i++) {
        //猴子选大王
        res = max(res, lcj / person[i].right);
        //更新连乘各
        lcj *= person[i].left;
    }
    printf("%d", res);
    return 0;
}