提交结果

#include<iostream>
using namespace std;
long long k,n,m;
long long a[30005],b[30005];
int main()
{
    cin>>k>>m>>n;
    bool found=false;
    for(long long i=1;i<=m;i++)
    {
        cin>>a[i]>>b[i];
        if(k/a[i]*b[i]>=n)
            cout<<i<<' ',found=true;
    }
    if(found==false)
        cout<<-1;
    return 0;
}