#include<iostream>
using namespace std;
//WA
int main()
{
	int d,s,mint,m,t,x,a;
	while(cin>>t>>x)
	{
		cin>>m;
		if(m==0) {cout<<t*x<<endl;continue;}
		mint=100000000;
		while(m--)
		{
			cin>>d>>s;
			a=(d-1)/s;
			if(mint>a) mint=a;
		}
		if(mint>t) mint=t;
		cout<<mint*x<<endl;
	}
	return 0;
}

• 牠跑了，Kicc还可以Move呢。when they do not hear the sound, they will go back (14) Judas 2005-10-16 22:24:08
  • 这题可不是我出的 (22) kicc 2005-10-16 22:34:38
    • 呵呵，一定是拿来逗你玩的~ (0) TN 2005-10-16 22:36:02
      • 自己出谁会说自己要被Eaten……:D (0) TN 2005-10-17 00:50:22
    • is Kicc , kicc a boy ? (0) Judas 2005-10-17 08:12:49