Add benchmark script

runall.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+i=1
+for f in *.py
+do
+    echo "-- problem $i -----------------------------------"
+    cmd="`which time` -f 'elapsed: %E' ./$f"
+    if [ -e input/$i ]
+    then cmd+=" < input/$i"
+    fi
+    eval $cmd
+    echo
+    i=$((i + 1))
+done