Problem:
Score : 100 points

Problem Statement

You are given a string S of length 3 consisting of a, b and c. Determine if S can be obtained by permuting abc.

Constraints

|S|=3

S consists of a, b and c.

Input

Input is given from Standard Input in the following format:

S

Output

If S can be obtained by permuting abc, print Yes; otherwise, print No.

Sample Input 1

bac

Sample Output 1

Yes

Swapping the first and second characters in bac results in abc.

Sample Input 2

bab

Sample Output 2

No

Sample Input 3

abc

Sample Output 3

Yes

Sample Input 4

aaa

Sample Output 4

No

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;

namespace A_abc_of_ABC
{
    class Program
    {
        static void Main(string[] args)
        {
            //値を読み込んでバラして格納
            string num = Console.ReadLine();
            char[] input = new char[3];

            for(int i=0; i<3; i++)
            {
                input[i] = num[i];
            }

            bool flag = false;

            int counter = 0;

            //a～cがひとつだけ入っていたらflagをtrueにする
            for(int i=0; i<3; i++)
            {
                if(input[0] == 'a')
                {
                    counter++;
                }
            }

            if(counter == 1)
            {
                flag = true;
            }
            counter = 0;

            for (int i = 0; i < 3; i++)
            {
                if (input[i] == 'b')
                {
                    counter++;
                }
            }

            if (counter == 1)
            {
                flag = true;
            }
            counter = 0;

            for (int i = 0; i < 3; i++)
            {
                if (input[0] == 'c')
                {
                    counter++;
                }
            }

            if (counter == 1)
            {
                flag = true;
            }

            if(flag == true)
            {
                Console.WriteLine("Yes");
            }
            else
            {
                Console.WriteLine("No");
            }

        }
        
    }
}