diff --git a/code_study/Baekjoon/python/18870.py b/code_study/Baekjoon/python/18870.py
new file mode 100644
index 0000000..185dc2b
--- /dev/null
+++ b/code_study/Baekjoon/python/18870.py
@@ -0,0 +1,8 @@
+import sys
+input = sys.stdin.readline
+
+N = int(input())
+axis = list(map(int, input().split()))
+temp = sorted(list(set(axis)))
+hash = {temp[i]: i for i in range(len(temp))}
+sys.stdout.write(' '.join(map(str,[hash[axis[i]] for i in range(N)])))
\ No newline at end of file