package main

func main() {

}
func generate(numRows int) [][]int {
	reslist := make([][]int, 0)
	for i := 0; i < numRows; i++ {
		tmpnumlist := make([]int, 0)
		if i == 0 {
			tmpnumlist = append(tmpnumlist, 1)
			reslist = append(reslist, tmpnumlist)
			continue
		}
		for j := 0; j < i+1; j++ {
			if j-1 < 0 {
				tmpnumlist = append(tmpnumlist, reslist[i-1][0])
				continue

			} else if j == len(reslist[i-1]) {
				tmpnumlist = append(tmpnumlist, reslist[i-1][j-1])
				continue
			}
			tmpnumlist = append(tmpnumlist, reslist[i-1][j]+reslist[i-1][j-1])
		}
		reslist = append(reslist, tmpnumlist)
	}
	return reslist
}