abc

#include <bits/stdc++.h>
using namespace std;
//
#define ll long long
#define ull unsigned long long
#define pb push_back
#define mx 100010
#define mod 1000000007
#define inf INT_MAX
#define pi acos(-1)
#define endl '\n'
#define fin freopen("input", "r", stdin)
#define Fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
//
set<ll> v;
void sieve(ll MAX)
{
    bool isprime[MAX];
    for (int i = 0; i <= MAX; i++)
    {
        isprime[i] = true;
    }
    for (int i = 3; i * i <= MAX; i += 2)
    {
        if (isprime[i])
        {
            for (int j = i * i; j <= MAX; j += i + i)
            {
                isprime[j] = false;
            }
        }
    }
    v.insert(2);
    for (int i = 3; i <= MAX; i += 2)
    {
        if (isprime[i])
        {
            v.insert(i);
        }
    }
}
int main() {
    ll t, a, b;
    cin >> t;

    scanf("%lld %lld", &a, &b);
    sieve(max(a, b));

}