Make most solutions work with make or shebang.

2017/day-01/Makefile

@@ -1,3 +1,4 @@
 CXXFLAGS=-Wall -Wextra -pedantic -O3 -std=c++14
 
 all: solution
+	./$<

2017/day-03/solution.clj

@@ -1,3 +1,4 @@
+#!/usr/bin/env clojure
 (defn lower_root [n] (int (Math/floor (Math/sqrt n))))
 
 (defn box_size [n] (

2017/day-04/solution.awk

@@ -1,3 +1,4 @@
+#!/usr/bin/awk -f
 function word2key(word, a, i, n, result)
 {
     n = split(word, a, "")

2017/day-07/.gitignore

@@ -0,0 +1 @@
+solution.exe

2017/day-07/Makefile

@@ -0,0 +1,5 @@
+all: solution.exe
+	mono $<
+
+solution.exe: solution.cs
+	mcs $< -o $@

2017/day-11/solution.scala

@@ -1,3 +1,4 @@
+#!/usr/bin/env scala
 import scala.io.StdIn
 
 object solution {

2017/day-12/solution.js

@@ -1,3 +1,4 @@
+#!/usr/bin/env node
 const stdin = process.openStdin();
 let content = '';
 

2017/day-13/solution.go

@@ -1,3 +1,4 @@
+///usr/bin/env go run $0 $@ ; exit
 package main
 
 import "fmt"

2017/day-14/.gitignore

@@ -0,0 +1 @@
+solution

2017/day-14/Makefile

@@ -0,0 +1,5 @@
+all: solution
+	./$<
+
+solution: solution.rs
+	rustc $< -o $@

2017/day-15/Makefile

@@ -0,0 +1,5 @@
+all: solution
+	./$<
+
+solution: solution.hs
+	ghc $< -o $@

2017/day-16/solution.groovy

@@ -1,3 +1,4 @@
+#!/usr/bin/env groovy
 void doRotate(List<String> list, String arg) {
 	def amount = Integer.valueOf(arg.substring(1))
 

2017/day-21/solution.coffee

@@ -1,3 +1,4 @@
+#!/usr/bin/env coffee
 String.prototype.count = (pattern) ->
 	(this.match(pattern) || []).length