Кирилл Деменев

package com.company;

import java.util.Scanner;
import java.util.Random;

public class Main {
    public static int everything(String smth, char smth2) {
        StringBuilder str = new StringBuilder();
        str.append(smth);
        for (int i = 0; i < str.length(); i++) {
            if (str.charAt(i) == smth2) {
                return i;
            }
        }
        return -1;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        String some_dumb = in.nextLine();
        char ch = in.nextLine().toCharArray()[0];

        System.out.print(everything(some_dumb, ch));
    }
}