Example

Input

7
>>


Output

7
#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<29;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-11;
const ll mod=1e9+7;
const int dx[4]={-1,0,1,0},dy[4]={0,-1,0,1};

int n;
string s;

int f(){
	int res=0,t=0;
	vi a(n);
	for(int i=0;i<n;i++) if(s[i]=='<') a[i]++;
	for(int i=1;i<n;i++) a[i]+=a[i-1];
	for(int i=0;i<n;i++){
		if(s[i]=='>') t++;
		int l=i-1,r=n-1;
		while(r-l>1){
			int m=(l+r)/2;
			if(a[m]-a[i]>=t) r=m;
			else l=m;
		}
		if(a[r]-a[i]==t){
			res=max(res,r+1);
		}
		else break;
	}
	reverse(s.begin(),s.end());
	for(int i=0;i<n;i++){
		if(s[i]=='>') s[i]='<';
		else s[i]='>';
	}
	return res;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin>>n>>s;
	cout<<max(f(),f())<<endl;
}
