might be making a mistake starting 2018...

2018/README.md

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+# Advent of Code 2018
+Language: GoLang.
+
+[https://adventofcode.com/2018](https://adventofcode.com/2018)
+
+---
+## Summary
+Day | Name | Type of Algo & Notes
+--- | --- | ---
+1 | Chronal Calibration | - Pretty simple, direct math problem
+2 | 

2018/day01/part1/main.go

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+package main
+
+import (
+	"adventofcode/util"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	input := util.ReadFile("../input.txt")
+	sli := strings.Split(input, "\n")
+
+	var sum int
+
+	for _, instruction := range sli {
+		sign := instruction[:1]
+		num, _ := strconv.Atoi(instruction[1:])
+		if sign == "+" {
+			sum += num
+		} else {
+			sum -= num
+		}
+	}
+
+	fmt.Println("Final sum", sum)
+}

2018/day01/part2/main.go

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+package main
+
+import (
+	"adventofcode/util"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func main() {
+	input := util.ReadFile("../input.txt")
+	sli := strings.Split(input, "\n")
+
+	var sum int
+	seen := make(map[int]bool)
+
+	for {
+		for _, instruction := range sli {
+			sign := instruction[:1]
+			num, _ := strconv.Atoi(instruction[1:])
+			if sign == "+" {
+				sum += num
+			} else {
+				sum -= num
+			}
+
+			if seen[sum] {
+				fmt.Println("Number seen twice is:", sum)
+				return
+			}
+			seen[sum] = true
+		}
+	}
+}