package main

import (
	"fmt"
)

func twoSum(nums []int, target int) []int {
	var i, j, v int
	for i, v = range nums {
		for j = i + 1; j < len(nums); j++ {
			if v+nums[j] == target {
				return []int{i, j}
			}
		}
	}
	// not found, [-1 -1]
	return []int{-1, -1}
}

func main() {
	fmt.Println(twoSum([]int{1, 2, 5, 6, 7}, 11))
}