Canada Cup 2016 A. Jumping Ball

Problem:http://codeforces.com/contest/725/problem/A
Code:

#include<bits/stdc++.h>
using namespace std;
int main()
{
    long long n,i,sum;
    string s;
    while(cin>>n>>s)
    {
        sum=0;
        for(i=0;i<s.length();i++)
        {
            if(s[i]=='<')
                sum++;
            else
                break;
        }
        for(i=s.length()-1;i>=0;i--)
        {

            if(s[i]=='>')
                sum++;
            else
                break;
        }
        cout<<sum<<endl;
    }
    return 0;
}