Codeforces Gym 100796G - Robot Walk Problem_Solution

/*
Tanzila Islam
Southeast University
mail : tanzilamohita@gmail.com
Problem Link : http://codeforces.com/gym/100796/problem/G
*/
#include<string>
#include<iostream>
using namespace std;

int main () {
    int n,x,m;
    string s1, s2;
    cin >> n >> x >> s1 >> m >> s2;
    x--;
    cout << s1[x];
    for (int i = 0; i < m; i++){
        if (s2[i] == 'R'){
            cout << s1[x+1];
            x++;
        }
        else if (s2[i] == 'L'){
            cout << s1[x-1];
            x--;
        }
    }
    cout << endl;
return 0;
}