Problem:
Score : 100 points

Problem Statement

Given is a lowercase English letter C that is not z. Print the letter that follows C in alphabetical order.

Constraints

C is a lowercase English letter that is not z.

Input

Input is given from Standard Input in the following format:

C

Output

Print the letter that follows C in alphabetical order.

Sample Input 1

a

Sample Output 1

b

a is followed by b.

Sample Input 2

y

Sample Output 2

z

y is followed by z.

Solution in C# (Mono 4.6.2.0) (judge verdict: Runtime Error)

using System;
using System.Collections.Generic;

class Test{
 public static void Main(){
   var NM = Console.ReadLine().Split(' ');
   int N = int.Parse(NM[0]);
   int M = int.Parse(NM[1]);
   bool cqa = false;
   int cq = 1;
   int WA = 0;
   int AC = 0;
   //var ans = new List<string[]>();
   for(int i=0 ;i<M;i++){  
     var res = Console.ReadLine().Split(' ');
     int resq = int.Parse(res[0]);
     if(resq>N){
      break; 
     }
     if(cq==resq&&!cqa){
       if(res[1]=="WA"){
         WA++;
       }else{
         AC++;
         cqa = true;
       }
     }else if(cq!=resq){
       cq = resq;
       cqa = false;
       if(res[1]=="WA"){
         WA++;
       }else{
         AC++;
         cqa = true;
       }
     }
   }
   Console.Write(AC);
   Console.Write(" ");
   Console.Write(WA);
 }
}