package main import ( "bufio" "fmt" "os" "sort" "strconv" ) func out(x ...interface{}) { fmt.Println(x...) } var sc = bufio.NewScanner(os.Stdin) func getInt() int { sc.Scan() i, e := strconv.Atoi(sc.Text()) if e != nil { panic(e) } return i } func getInts(N int) []int { ret := make([]int, N) for i := 0; i < N; i++ { ret[i] = getInt() } return ret } func getString() string { sc.Scan() return sc.Text() } // min, max, asub, absなど基本関数 func max(a, b int) int { if a > b { return a } return b } func min(a, b int) int { if a < b { return a } return b } func asub(a, b int) int { if a > b { return a - b } return b - a } func abs(a int) int { if a >= 0 { return a } return -a } func lowerBound(a []int, x int) int { idx := sort.Search(len(a), func(i int) bool { return a[i] >= x }) return idx } func upperBound(a []int, x int) int { idx := sort.Search(len(a), func(i int) bool { return a[i] > x }) return idx } func main() { sc.Split(bufio.ScanWords) sc.Buffer([]byte{}, 1000000) N := getInt() a := make([][]int, N) for i := 0; i < N; i++ { a[i] = make([]int, N) } // for i := 1; i <= N; i++ { // for j := 1; j <= N; j++ { // a[i-1][j-1] = (2*i - j) % N // if a[i-1][j-1] <= 0 { // a[i-1][j-1] += N // } // } // } for i := 0; i < N; i++ { x := i y := i for j := 0; j < N; j++ { a[y][x] = i + 1 x-- y++ if x < 0 { x += N } y %= N } } w := bufio.NewWriter(os.Stdout) defer w.Flush() for i := 0; i < N; i++ { out(a[i]) } }