题解-luogu-p1080国王游戏

N=int(input())
s=input().split()
S=int(s[0])
T=int(s[1])
a=[]
for i in range(1,N+1):
    k=input().split()
    a.append((int(k[0]),int(k[1])))
a.sort(key=lambda x:x[0]*x[1])
ans=0
for i in range(0,N):
    if(S//(a[i])[1]>ans):
        ans=S//(a[i])[1]
    S*=(a[i])[0]
print(ans)