package main import ( "strings" "github.com/StevanFreeborn/advent-of-code-2025/cmd/02/rnge" "github.com/StevanFreeborn/advent-of-code-2025/internal/file" ) const SeparatorCharacter = "," func SolvePartOne(filePath string) int64 { input := file.ReadAllText(filePath) strRanges := strings.SplitSeq(input, SeparatorCharacter) total := int64(0) for r := range strRanges { rng := rnge.From(r) for id := range rng.InvalidIds() { total += id } } return total }