#include <bits/stdc++.h>

using namespace std;

int main() {

    int n;
    cin >> n;

    int l = 1;
    int r = n+1;
    // (l ; r]
    while(r-l > 1){
        int m = (l+r)/2;
        cout << m << endl;
        string s;
        cin >> s;
        if(s == "<")
            r = m;
        else
            l = m;
    }

    cout << "! " << l << endl;

    return 0;
}