~~坚持手写高精，抵制py，从我做起~~
by FrenzyHydra @ 2018-05-31 21:58:07
```python
n = int(input())
x, y = map(int, input().split())
w = []
for i in range(0, n):
L, R = map(int, input().split())
w.append({"L": L, "R": R, "val": L*R})
w.sort(key=lambda num: num["val"])
cnt = x
ans = 0
for i in range(0, n):
ans = max(ans, cnt//w[i]["R"])
cnt *= w[i]["L"]
print(ans)
```
亲测可过
by 青梧 @ 2018-07-08 15:47:07