diff --git a/DsaPlayGround/AllImages/countprimeleetcode.jpg b/DsaPlayGround/AllImages/countprimeleetcode.jpg
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diff --git a/DsaPlayGround/PlayGround/countprime.py b/DsaPlayGround/PlayGround/countprime.py
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+++ b/DsaPlayGround/PlayGround/countprime.py
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+class Solution:
+    def countPrimes(self, n: int) -> int:
+        if n == 0:
+            return 0
+        prime = [True for i in range(n+1)]
+        count = 0
+        p = 2
+        while p * p <= n:
+            if prime[p]:
+                for i in range(p * 2, n+1, p):
+                    prime[i] = False
+            p += 1
+        prime[0], prime[1] = False, False
+        for p in range(n):
+            if prime[p]:
+                count += 1
+        return count