Submission #162123

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Source Code Expand

import java.io.*;

class Dictionary {
	BufferedReader reader;
	void solve() {
		try {
			reader = new BufferedReader(new InputStreamReader(System.in));
			String str = ns();
			int len = str.length();
			char lastC = str.charAt(len-1);
			String s = "";
			if(lastC > 'a')
				s = String.valueOf(--lastC);
			s = str.substring(0,len-1) + s;
			if(s.equals(""))
				s = "-1";
			System.out.println(s);
		}
		catch(Exception e){
			e.printStackTrace();
		}
	}
	int[] nis() throws IOException {
		String[] str = nss();
		int[] ans = new int[str.length];
		for(int i = 0;i < str.length;i++) {
			ans[i] = Integer.parseInt(str[i]);
		}
		return ans;
	}
	int ni() throws IOException {
		return Integer.parseInt(ns());
	}
	String ns() throws IOException {
		return reader.readLine();
	}
	String[] nss() throws IOException {
		return ns().split(" ");
	}
}
public class Main {
	public static void main(String[] args) {
		new Dictionary().solve();
	}
}

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