python-algorithm
[백준] 1526
무적김두칠
2021. 1. 21. 10:03
|
1
2
3
4
5
6
7
8
9
10
|
n=int(input())
while 1:
cnt=0
for i in str(n):
if i!="4" and i!="7":
cnt=1
n-=1
if cnt==0:
print(n)
break
|
cs |
반응형