ARC#19-B.java

package jp.dip.jimanglaurant;

import java.util.Scanner;

public class B {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();
		scan.close();
		
		int l = s.length();
		int ans = 0;
		
		for(int i = 0;i < (l / 2);i++){
			StringBuilder name = new StringBuilder(s);
			
			if(name.charAt(i) == name.charAt(l - i - 1)){
				ans += 25;
			}else{
				name.replace(i, i+1, String.valueOf(name.charAt(l - i - 1)));
				String namet = new String(name);
				name.reverse();
				if(namet.equals(name.toString())){
					ans += 24;
				}else{
					ans += 25;
				}
			}
		}

		ans = ans*2;
		
		if(l % 2 == 1){
			StringBuilder sb = new StringBuilder(s);
			sb.reverse();
			if(s.equals(sb.toString())){
				ans += 0;
			}else{
				ans += 25;
			}
		}
		System.out.println(ans);
	}
}