diff --git a/solution/binary_search/1477/main.py b/solution/binary_search/1477/main.py
index 8705bbdb9a3..6fc172fe0e6 100644
--- a/solution/binary_search/1477/main.py
+++ b/solution/binary_search/1477/main.py
@@ -1,6 +1,6 @@
 # Authored by : yj2221
-# Co-authored by : -
-# Link : http://boj.kr/b93ed1e8f2a7413fa8fe39483692604f
+# Co-authored by : tony9402
+# Link : http://boj.kr/3fe7ddd4b0c2437882109089a41a0349
 
 import sys
 
@@ -11,19 +11,20 @@ def input():
 rests = [0] + list(map(int, input().split())) + [l]
 rests.sort()
 
-_min = 0
-_max = l
-answer = _max
-while _min <= _max:
-    mid = (_min + _max) // 2
+low = 1
+high = l
+answer = high
+while low <= high:
+    mid = (low + high) // 2
+    
     cnt = 0
     for i in range(n+1):
         cnt += (rests[i+1] - rests[i] - 1) // mid 
         
     if cnt<=m:
         answer = mid
-        _max = mid-1
+        high = mid - 1
     else:
-        _min = mid+1
+        low = mid + 1
         
-print(answer)
\ No newline at end of file
+print(answer)