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/**

*

*/

//import java.io.*;

/**

* @author DELL

* Project Name: Java_learn

* Class Name: IoTest01

* date: 2019年9月7日

*/

//public class IoTest01 {

// public static void main(String[] args) throws IOException{

// int i = (int) System.in.read();

// System.out.println("The i is:"+i);

// }

//}

import java.io.*;

import java.util.Scanner;

import java.util.Arrays;

public class IoTest01 {

public static boolean isValid(String s) {

char[] string = new char[s.length()];

int i = 0;

for(char c: s.toCharArray()) {

string[i++] = c;

}

for(int j = 0; j < string.length - 1;j = j+2){

if(string[j] == '(' && string[j+1] == ')') {

continue;

} else if (string[j] == '{' && string[j+1] == '}'){

continue;

} else if (string[j] == '[' && string[j+1] == ']'){

continue;

} else {

return false;

}

}

return true;

}

public static void main(String[] args) throws IOException{

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

String str = br.readLine();

boolean flag = isValid(str);

System.out.println(flag);

}

}