package main import ( "bufio" "fmt" "os" "strconv" ) const ( m = 1000000007 ) func main() { defer flush() N := readInt() M := readInt() K := readInt() pqc := make([][][2]int, 301) for i := 0; i < M; i++ { P := readInt() Q := readInt() C := readInt() pqc[P] = append(pqc[P], [2]int{Q, C}) } t := make([]map[int]int, 301) for i := 1; i < 301; i++ { t[i] = map[int]int{0: 1} } for i := 0; i < N-1; i++ { nt := make([]map[int]int, 301) for j := 1; j < 301; j++ { for k := range t[j] { for _, qc := range pqc[j] { q := qc[0] c := qc[1] v := (k + c) % m if nt[q] == nil { nt[q] = map[int]int{} } if v <= 300 { nt[q][v] += t[j][k] } } } } t = nt } result := 0 for i := 1; i < 301; i++ { result += t[i][K] result %= m } println(result) } const ( ioBufferSize = 1 * 1024 * 1024 // 1 MB ) var stdinScanner = func() *bufio.Scanner { result := bufio.NewScanner(os.Stdin) result.Buffer(make([]byte, ioBufferSize), ioBufferSize) result.Split(bufio.ScanWords) return result }() func readString() string { stdinScanner.Scan() return stdinScanner.Text() } func readInt() int { result, err := strconv.Atoi(readString()) if err != nil { panic(err) } return result } var stdoutWriter = bufio.NewWriter(os.Stdout) func flush() { stdoutWriter.Flush() } func println(args ...interface{}) (int, error) { return fmt.Fprintln(stdoutWriter, args...) }