#include <stdio.h>
#define MAX 100

void serch_zatv(char vhod[MAX]){
    
    char first[2] = "{}";
    char second[2] = "[]";
    char thrid[2] = "<>";
    char fourth[2] = "()";
    int idx = 0;
    int idt = 0;
    char find[50];
    
    while(vhod[idx] != "\0"){
    
    if(vhod[idx] == first[0]){
        find[idt] = first[1];
        idt++;
    }

    if(vhod[idx] == second[0]){
         find[idt] = second[1];
        idt++;
    }
    
    if(vhod[idx] == thrid[0]){
         find[idt] = thrid[1];
        idt++;
    }

    if(vhod[idx] == fourth[0]){
         find[idt] = fourth[1];
        idt++;
    }

    for(int i = 0; i < idt; i++){
        if(vhod[idx] == find[i]){
            find[i] = ".";
            for(int r = i + 1; i < idt; r++){
                if(find[r] != "." || find[r] != "\0"){
                    printf("Crossed bracket %c in %d, expected %c", vhod[idx], idx, find[idt]);
                    return 0;
                }
            }
        }
    }

    idx++;
    }
    for(int i = 0; i < idt){
        if(find[i] != "." || find[i] != "\0"){
            printf("herna");
            return 0;
        }
    }
    printf("All brackets OK");
}



int main() {
    char riadok[MAX];

    scanf("%s", &riadok);
    serch_zatv(riadok);


    return 0;
}