Add kattis prob pervasiveheartmonitor in python3

kattis/pervasiveheartmonitor/solution.py

@@ -0,0 +1,15 @@
+import sys
+
+digs = set(['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'])
+
+for line in sys.stdin.readlines():
+    name = []
+    tot = 0
+    n = 0
+    for word in line.split():
+        if word[0] in digs:
+            tot += float(word)
+            n += 1
+        else:
+            name.append(word)
+    print('{:.4f}'.format(tot/n), ' '.join(name))