[백준] 1475번 : 방 번호 - Python(파이썬)

https://www.acmicpc.net/problem/1475

n=int(input())
k=str(n)
arr=[0]*10
count=0
for i in range(len(k)):
    arr[n%10]+=1
    n//=10
arr[6]+=arr[9]
arr[9]=0
for i in range(10):
    a=0
    if i==6:
        if arr[i]%2==0: a=arr[i]//2
        else: a=(arr[i]//2)+1
    else: a=arr[i]
    if a>=count: count=a
print(count)