update #73 add rules

Author: alisharify7

Medium-Questions/73-distinct-numbers/Python/app.py

@@ -1,7 +1,31 @@
+import sys
+
+"""
+1 <= n <= 2.10^5
+1 <= x_i <= 10^9
+
+"""
+
 def main():
     n = int(input("enter n:"))
+
+    if (n < 1 or n >= (2 * (10 ** 5))): # n
+        sys.exit("Invalid input n")
+
     numbers = input("enter numbers:")
-    numbers_bank = set(numbers.split())
+    numbers = numbers.split()
+
+    if len(numbers) != n:
+        sys.exit("length of numbers must be equal to n")
+
+    for each in numbers:
+        each = int(each)
+        if (1 >= each or each >= 10**9):
+            sys.exit("Invalid input x must be between 1 and 10**9") 
+
+
+    numbers_bank = set(numbers) 
+    # set removes duplicates numbers automatically
     print(len(numbers_bank))
 
 

Medium-Questions/73-distinct-numbers/README.md

@@ -9,5 +9,4 @@ Print one integers: the number of distinct values.
 https://cses.fi/problemset/task/1621
 
 
-
 <img src="./doc/quiz.png">