add ARC004A

Author: IsHYuhi

ARC/ARC004/A.py

@@ -0,0 +1,8 @@
+import math
+n = int(input())
+xy = [list(map(int, input().split())) for _ in range(n)]
+ans = 0
+for i in range(n-1):
+    for j in range(i+1, n):
+        ans = max(ans, math.sqrt((xy[i][0]-xy[j][0])**2 + (xy[i][1]-xy[j][1])**2))
+print(ans)