42 lines
819 B
Go
42 lines
819 B
Go
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package main
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import (
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"fmt"
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h "git.bullercodeworks.com/brian/adventofcode/helpers"
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)
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func main() {
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inp := h.StdinToIntSlice()
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fmt.Println("# Part 1")
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part1(inp)
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fmt.Println("# Part 2")
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part2(inp)
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}
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func part1(input []int) {
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for i := 0; i < len(input); i++ {
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for j := i + 1; j < len(input); j++ {
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if input[i]+input[j] == 2020 {
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fmt.Printf("Entries %d and %d sum to 2020\n", i, j)
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fmt.Printf("Answer: %d\n", input[i]*input[j])
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return
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}
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}
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}
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}
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func part2(input []int) {
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for i := 0; i < len(input); i++ {
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for j := i + 1; j < len(input); j++ {
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for k := j + 1; k < len(input); k++ {
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if input[i]+input[j]+input[k] == 2020 {
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fmt.Printf("Entries %d, %d, and %d sum to 2020\n", i, j, k)
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fmt.Printf("Answer: %d\n", input[i]*input[j]*input[k])
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return
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}
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}
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}
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}
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}
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