백준 1475 방 번호

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

1475번: 방 번호

N=input()
result=[0,0,0,0,0,0,0,0,0]
for i in range(len(N)):
    if N[i]=='9':
        result[6]+=1
    else:
        result[int(N[i])]+=1
if result[6]%2==0:
    result[6]=result[6]//2
else:
    result[6]=result[6]//2+1
print(max(result))