```cpp
#include<bits/stdc++.h>
/*#include<windows.h>
#include<unistd.h>*/
using namespace std;
typedef long long LL;
LL k,m,n,a,b;
bool flag;
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
/*freopen(".in","r",stdin);
freopen(".out","w",stdout);*/
//srand(time(NULL));
cin>>k>>m>>n;
for(int i=1;i<=m;i++)
{
cin>>a>>b;
if(a==0)
{
if(b!=0)
cout<<i<<" ",flag=true;
continue;
}
if(1ll*k/a*b>=n)
cout<<i<<" ",flag=true;
}
if(!flag)
cout<<-1;
return 0;
}
```
加了个特判，解决了。
by TBLGyyx @ 2024-04-05 11:00:49