Add day1 problem + solution

day1/day1p1.nim

@@ -0,0 +1,22 @@
+import os
+import std/strutils
+
+proc main() =
+  let fileName = paramStr(1)
+
+  var increased = 0
+  var lastVal = -1
+
+  for val in fileName.lines:
+    let curVal = val.parseInt
+
+    if lastVal != -1 and lastVal < curVal:
+      increased += 1
+
+    lastVal = curVal
+
+  echo increased, " increases"
+
+
+
+main()