/*
*
Unique word count in Go
Usage: go run counts.go < file
* @author gtowell
* created: July 20, 2021
* updated: August 2023
*/
package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	counts := make(map[string]int)
	input := bufio.NewScanner(os.Stdin)
	input.Split(bufio.ScanWords) // split on whitespace ... the default is split on line
	for input.Scan() {
		counts[input.Text()]++
	}
	fmt.Printf("%d\n", len(counts))
	fmt.Printf("%v\n", counts)
}