1 files changed, 7 insertions, 0 deletions
diff --git a/progs/a712.py b/progs/a712.py
new file mode 100644
index 0000000..72c3bfc
--- /dev/null
+++ b/progs/a712.py
@@ -0,0 +1,7 @@
+def check(string) :
+    p = set(string) 
+    s = {'0', '1'} 
+    if s == p or p == {'0'} or p == {'1'}: 
+        return ("Yes") 
+    else : 
+        return ("No") 
+\ No newline at end of file