#include <bits/stdc++.h>
// meeeooowwwww mrrowwww :3
// go play vivid/stasis!! now!!!! https://vividstasis.gay
#define fo(i, a, b) for (auto i = (a); i < (b); i++)
#define of(i, a, b) for (auto i = (b); i-- > (a);)
#define f first
#define s second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define be(a) a.begin(), a.end()
using namespace std;
int ____init = []{
ios::sync_with_stdio(false);
cin.tie(NULL), cout.tie(NULL);
return 0;
}();
bool jump(int x);
int n, i;
bool jum(int x) {
bool res = jump((n + x - i) % n);
i = x;
return res;
}
void escape(int _n) {
n = _n, i = 0;
int l = 0, r = n - 1;
while (l < r) {
int mid = (l + r) / 2;
if (jum(mid)) r = mid;
else l = mid + 1;
}
if (l == n - 1 && !jum(n - 1)) l = 0;
jum(l + n / 2);
}
