#include<bits/stdc++.h>
using namespace std;
int ask(int b,int a)
{
    printf("? %d %d\n",a,b);
    int res;
    fflush(stdout);
    scanf("%d",&res);
    return res;
}
void guess(int b,int a)
{
    printf("! %d %d\n",a,b);
    fflush(stdout);
}
int R(int n)
{
    srand(time(0));
    return rand()%n+1;
}
int base[2024];
int gs[2024];
map<int,int>fun;
int main()
{
    int n,s;
    int size;
    scanf("%d",&n);
    int bar=(int)(1+sqrt(n));
    s=ask(1,n);
    base[0]=s;
    fun[s]=1;
    for(int i=1;i<=bar;i++)
    {
        int x=ask(s,i);
        if(x==s)
        {
            size=i;
            int y=(size+(-s)%size)%size;
            guess(base[y],s);
            return 0;
        }
        base[i]=x;
        fun[x]=i+1;
    }
    for(int i=2;i<=bar;i++)
    {
        int x=ask(s,i*bar);
        if(fun[x]!=0)
        {
            int bia=fun[x]-1;
            size=i*bar-bia;
            int y=(size+(-s)%size)%size;
            int t=ask(s,y);
            guess(t,s);
            return 0;
        }
    }
    return 0;
}