s=''.join(input())
stack=[]
def help(cur1,cur2):
    for i in range(len(s)):
        if s[i]==cur1:
            stack.append(s[i])
        elif s[i]==cur2:
            stack.pop()
            if stack:
                return False 
    return True if not stack else False 
res1,res2,res3=True,True,True
res1=help('{','}') 
res2=help('[',']')
count=s.count('"')
res3=True if count%2==0 else False
if res1 and res2 and res3:
    print('true')
else:
    print('false')

n=int(input())
count=0
def help(n):
    if n<5:
        return 0
    else:
        count=(n//5+help(n//5))
        return count
print(help(n))