#include<stdio.h>
#include<string.h>
int main()
{
    char s[100],st[100];int top=-1;
    scanf("%s",s);
    for(int i=0;s[i];i++){
        char c=s[i];
        if(c=='('||c=='{'||c=='[') st[++top]=c;
        else if(c==')'||c=='}'||c==']'){
            if(top==-1||(c==')'&&st[top]!='(')||c=='}'&&st[top]!='{')||(c==']'&&st[top]!='['))
            {
                printf("Not Balanced");
                return 0;
            }
            top--;
        }
    }
    printf(top==-1?"Balanced":"Not Balanced");
}