x有可能是0啊，div后面不能跟0的
by Dawn_Chase @ 2018-03-22 20:50:59
已跟正，谢谢
by RKcer21 @ 2018-03-25 13:38:54
70分，
#include<bits/stdc++.h>
using namespace std;
int m,n,f,r,j[100006];
int k;
long long a,b;
int main()
{
cin>>k>>m>>n;
for(int i=1;i<=m;i++)
{
cin>>a>>b;
r=k/a*b;
if(r>=n)
{
j[++f]=i;
}
}
if(f==0) cout<<"-1";
else for(int i=1;i<=f;i++) cout<<j[i]<<" ";
return 0;
}
by Shui_Dream @ 2018-06-24 19:30:12