// kodkupa flea.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>

using namespace std;

char a;
int n, i, x[202],db;

int main()
{
    cin >> n;
    db = 101;
    for (i = 1; i <= n; ++i)
    {
        cin >> a;
        if (a == 'L')
        {
            --db;
        }
        else ++db;
    }
    if (db <= 101)cout << 101 - db;
    else cout << db - 101;
    return 0;
}
/*
2
RL

8
RRLRLLLL

*/
// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu

// Tips for Getting Started: 
//   1. Use the Solution Explorer window to add/manage files
//   2. Use the Team Explorer window to connect to source control
//   3. Use the Output window to see build output and other messages
//   4. Use the Error List window to view errors
//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file