#include <stdio.h>
#include <string.h>
int main(){
    char s[101];
    char stack[101];
    int top = -1;
    fgets(s, sizeof(s), stdin);
    for(int i=0;s[i] != "\0";i++){
        char ch = s[i];
        if(ch == '(' || ch == '{' || ch == '['){
            stack[++top] = ch;
        }
        else if(ch == ')' || ch == '}' ch == ']'){
            if(top == -1){
                printf("Not Balanced");
                return 0;
            }
            char last = stack[top--];
            if((ch == ')' && last != '(') || (ch == '}' && last != '{') || (ch == ']' && last != '[')){
               printf("Not Balanced");
               return 0;
            }
        }
    }
    if(top == -1)
    printf("Balanced");
    else
    printf("Not Balanced");
    return 0;
}