S
func sliceAtoiSecond(sa [][]string) ([][]int64, error) {
si := make([][]int64, 0, len(sa))
for _, a := range sa {
i, _ := strconv.ParseInt(a[1], 0, 64)
i2, _ := strconv.ParseInt(a[2], 0, 64)
si = append(si, []int64{i, i2})
}
return si, nil
}