package 第三周課后編程練習(xí)與學(xué)習(xí)任務(wù);

import java.util.Arrays;

import java.util.Scanner;

import java.util.TreeSet;

public class zuoye4 {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String str = sc.nextLine().toString();

int a[] = new int[str.length()];

for (int b = 0; b < str.length();b++) {

char c = str.charAt(b);

a[b] = (int) (c -'0');

}

int temp = 0;

for (int c = 0; c < str.length();c++) {

for (int d = 0; d < str.length();d++) {

if (a[c] >a[d]) {

temp =a[c];

a[c] =a[d];

a[d] =temp;

}

}

}

TreeSet<Integer> ts =new TreeSet<Integer>();

int b = 0;

for (int z = 0; z < a.length - 1;z++) {

b = a[z + 1] - a[z];

ts.add(b);

}

if (ts.size() == 1) {

System.out.println("1");

} else {

System.out.println("0");

}

}

}