diff --git a/run_all.py b/run_all.py
index 97fb085..b5c7324 100644
--- a/run_all.py
+++ b/run_all.py
@@ -3,6 +3,7 @@
 from os import listdir
 from os.path import isdir, isfile
 from subprocess import Popen, PIPE, CalledProcessError
+from time import time
 
 
 for dir in [x for x in sorted(listdir('.')) if isdir(x)]:
@@ -10,10 +11,11 @@ for dir in [x for x in sorted(listdir('.')) if isdir(x)]:
     input = dir + '/input.txt'
     if isfile(file) and isfile(input):
         print(dir, ':', sep='')
+        start_time = time()
         with Popen(["python3", file], stdout=PIPE, bufsize=1, universal_newlines=True) as p:
             for b in p.stdout:
                 print(b, end='')
+        end_time = time()
         if p.returncode != 0:
             raise CalledProcessError(p.returncode, p.args)
-
-
+        print(f'Runtime: {end_time-start_time:.2f} s')