#include<stdio.h>
#include<string.h>
int main()
{
    char s[105],stack[105];
    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 open =stack[top--];
        if((ch==')'&&open!='('||ch=='}'&&open!='{')||(ch==']'&&open!='['))
        { 
            printf("Not Balanced");
            return 0;
        }
        }  
    }
    
    if(top==-1)
    printf("Balanced");
    else
    printf("Not Balanced");
    return 0;
}