#include <iostream>

using namespace std;

struct adatok
{
    int dist;
    int price;
};
//1. feladat
int furthest(int N, adatok adat[])
{
    int max = 0;
    for (int i = 0; i < N; i++)
    {
        if (max < adat[i].dist)
        {
            max = adat[i].dist;
        }
    }
    return max;
}

int search(int N, adatok adat[])
{
    int max = furthest(N, adat);
    int i = 0;
    while(adat[i].dist != max)
    {
        i++;
    }
    return i+1;                    //A megodásban 0.tól kell indexelni !!!
}
//2. feladat
int mostExpensivePrice(int N, adatok adat[])
{
    int value = 0;
    for (int i = 0; i < N; i++)
    {
        if (value < adat[i].price && 1000 > adat[i].dist)
        {
            value = adat[i].price;
        }
    }
    if (value == 0)
    {
        value = -1;
    }
    return value;
}
//3.feladat
bool isOnly(int N, int x, adatok adat[])        //egyedül van??
{
    bool exist = true;
    int h = 0;
    for (int i = 0; i < N; i++)
    {
        if (adat[i].price == adat[x].price && i !=x)
        {
            h++;
        }
    }
    if (h > 0)
    {
        exist = false;
    }
    return exist;
}

int obvDist(int N, adatok adat[])            //egyértelmű távolság
{
    int ones = 0;
    for (int i = 0; i < N; i++)
    {
        bool x = isOnly (N, i, adat);
        if (x)
        {
            ones++;
        }
    }
    return ones;
}
//4.feladat
int pricePerKm(int N, int x, adatok adat[])
{
    int priceKm = adat[x].price / adat[x].dist;
    return priceKm;
}

int moreThanHundred(int N, adatok adat[])
{
    int amo = 0;
    for (int i = 0; i < N; i++)
    {
        if(pricePerKm (N, i, adat) > 100)
        {
            amo++;
        }
    }
    return amo;
}

void expensive(int N, adatok adat[])
{
    int amo = moreThanHundred (N, adat);
    cerr << "Negyedik: darab+sorszam, ha tobb mint 100 ft: ";
    cout << amo;
    for (int i = 0; i < N; i++)
    {
        if(pricePerKm (N, i, adat) > 100)
        {
            cerr << " ";
            cout << i+1;
        }
    }
}

int main ()
{
    //DIST        PRICE
    int N;
    cin >> N;
    adatok adat[N];
    for (int i = 0; i < N; i++)
    {
        cin >> adat[i].dist >> adat[i].price;
    }
    int elso          = search (N, adat);
    int masodik       = mostExpensivePrice (N, adat);
    int harmadik      = obvDist (N, adat);
    cerr << "Elso: legtavolabbi varos sorszama: "                                     ;cout << elso      << "\n";
    cerr << "Masodik: 1000 kilometernel kozelebbi varosok kozul a legdragabb ar: "  ;cout << masodik  << "\n";
    cerr << "Harmadik: egyertelmu varos tavolsagok szama: "                         ;cout << harmadik << "\n";
    expensive(N, adat);
    return 0;
}