#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;
}