题解 | #杨辉三角的变形#
杨辉三角的变形
https://www.nowcoder.com/practice/8ef655edf42d4e08b44be4d777edbf43
package main import "fmt" func main() { var n int fmt.Scan(&n) if n == 1 || n == 2 { fmt.Println(-1) return } switch n % 4 { case 1, 3: fmt.Println(2) case 0: fmt.Println(3) case 2: fmt.Println(4) default: fmt.Println(-1) } }