package main

import "fmt"

func main() {
	times := []string{"Corinthians", "Londrina", "Operário", "Leicester"}
	calendario := [][]string{}

	lenTimes := len(times)
	lenTimes2 := lenTimes / 2

	for y := 1; y < lenTimes; y++ {
		for i, x := 0, lenTimes2; i < lenTimes2; i, x = i+1, x+1 {
			calendario = append(calendario, []string{times[i], times[x]})
		}
		t := y + 1
		if t == lenTimes {
			t = 0
		}
		times[y], times[t] = times[t], times[y]
	}

	for _, rodada := range calendario {
		fmt.Printf("%s x %s\n", rodada[0], rodada[1])
	}
}