Example

Input

7
>>


Output

7
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,k,n) for(int i = (int)(k); i < (int)(n); i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(a) a.begin(), a.end()
#define MS(m,v) memset(m,v,sizeof(m))
typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<string> vs;
typedef pair<int, int> pii;
const int MOD = 1e9 + 7;
template<class T> T &chmin(T &a, const T &b) { return a = min(a, b); }
template<class T> T &chmax(T &a, const T &b) { return a = max(a, b); }
template<class T>
istream& operator >> (istream& is, vector<T>& v)
{
	for (auto &i : v) is >> i;
	return is;
}
template<class T>
ostream& operator<<(ostream& os, vector<T>& v)
{
	const string delimiter = "\n";
	REP(i, v.size())
	{
		os << v[i];
		if (i != v.size() - 1) os << delimiter;
	}
	return os;
}
/*--------------------template--------------------*/

int n;
string s;

pii sim(int p)
{
	int l = p - 1, r = p + 1;
	int cnt = 0;
	while (1)
	{
		if (p == -1)
		{
			return pii(cnt, 1);
		}
		if (p == n)
		{
			return pii(cnt, 0);
		}
		cnt++;
		if (s[p] == '>')
		{
			p = r;
			r++;
		}
		else
		{
			p = l;
			l--;
		}
	}
}

int main()
{
	cin.sync_with_stdio(false); cout << fixed << setprecision(10);
	cin >> n >> s;
	int lb = 0, ub = n;
	int ans = 0;
	while (ub - lb > 1)
	{
		int mid = (ub + lb) / 2;
		auto res = sim(mid);
		chmax(ans, res.first);
		if (res.second == 0) ub = mid;
		else lb = mid;
	}
	cout << ans << endl;
	return 0;
}
