using static System.Math; using System; public class Hello { static void Main() { var n = int.Parse(Console.ReadLine().Trim()); var s = Console.ReadLine().Trim(); string[] line = Console.ReadLine().Trim().Split(' '); var a = Array.ConvertAll(line, int.Parse); getAns(n, s, a); } static void getAns(int n, string s, int[] a) { var b = new int[n]; b[0] = s[0] == 'B' ? -a[0] : a[0]; var tmax = b[0]; var tmin = Min(0, b[0]); for (int i = 1; i < n; i++) { b[i] = s[i] == 'R' ? b[i - 1] + a[i] : b[i - 1] - a[i]; tmax = Max(tmax, b[i]); tmin = Min(tmin, b[i]); } Console.WriteLine(Abs(tmax - tmin)); } }