import java.io.*;
import java.math.*;
import java.text.*;
import java.util.*;
import java.util.regex.*;
public class Solution {
private static final Map validChars = populateValidChars();
private static Map populateValidChars() {
Map map = new HashMap();
map.put('[', ']');
map.put('{', '}');
map.put('(', ')');
return map;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while (sc.hasNext()) {
String str = sc.next();
System.out.println(valid(str));
}
}
public static boolean valid(String str) {
Stack stack = new Stack();
for (int i = 0; i