# 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;
}