diff --git a/python/set mutation b/python/set mutation
new file mode 100644
index 0000000..6888838
--- /dev/null
+++ b/python/set mutation	
@@ -0,0 +1,21 @@
+if __name__ == "__main__":
+    n = int(input())
+    s = set(map(int, input().split())) 
+    num_cmds = int(input())
+    
+    for _i in range(num_cmds):
+        cmd = list(input().strip().split(' '))
+        if cmd[0] == 'intersection_update':
+            get_set = set(map(int, input().split(' ')))
+            s &= get_set
+        elif cmd[0] == 'update':
+            get_set = set(map(int, input().split(' ')))
+            s |= get_set
+        elif cmd[0] == 'difference_update':
+            get_set = set(map(int, input().split(' ')))
+            s -= get_set
+        elif cmd[0] == 'symmetric_difference_update':
+            get_set = set(map(int, input().split(' ')))
+            s ^= get_set
+    
+    print(sum(s))