Create 339A - Helpful Maths.py

Author: fuwutu

339A - Helpful Maths.py

@@ -0,0 +1,12 @@
+#4362738	 Aug 28, 2013 6:54:41 PM	fuwutu	 339A - Helpful Maths	 Python 3	Accepted	 92 ms	 0 KB
+s = input()
+n1 = n2 = n3 = 0
+for i in range(0, len(s), 2):
+    if s[i] == '1':
+        n1 += 1
+    elif s[i] == '2':
+        n2 += 1
+    else:
+        n3 += 1
+ss = "1+" * n1 + "2+" * n2 + "3+" * n3
+print(ss[:-1])