package main import "core:fmt" import "core:strings" INPUT :: `'91#08A$ B*$E>/45<8,G $K$B 1</J &F!@=1-:P%?"(?@% #J05*7)E,G B2!G8- 3918C*63"R6= %J/7 -@8A #TN!D.K!*:2. <B *"%P!C3DD%C$ 2%81A33A52-8H&!RK)C"/:3;` main :: proc () { fmt.println(decode(INPUT)) } decode :: proc (s: string, allocator := context.allocator) -> string { s := s sb := strings.builder_make(allocator) for part in strings.split_iterator(&s, " ") { assert(len(part)%2==0) if strings.builder_len(sb) > 0 { strings.write_byte(&sb, ' ') } for i:=0; i<len(part); i+=2 { strings.write_byte(&sb, part[i] + part[i+1]) } } return strings.to_string(sb) }