#include <bits/stdc++.h>
using namespace std;
using LL = long long int;
#define incID(i, l, r) for(int i = (l)    ; i <  (r); ++i)
#define decID(i, l, r) for(int i = (r) - 1; i >= (l); --i)
#define incII(i, l, r) for(int i = (l)    ; i <= (r); ++i)
#define decII(i, l, r) for(int i = (r)    ; i >= (l); --i)
#define inc(i, n)  incID(i, 0, n)
#define dec(i, n)  decID(i, 0, n)
#define inc1(i, n) incII(i, 1, n)
#define dec1(i, n) decII(i, 1, n)
#define inID(v, l, r) ((l) <= (v) && (v) <  (r))
#define inII(v, l, r) ((l) <= (v) && (v) <= (r))
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define MT make_tuple
#define FI first
#define SE second
#define FR front()
#define BA back()
#define ALL(v) v.begin(), v.end()
#define RALL(v) v.rbegin(), v.rend()
auto setmin   = [](auto & a, auto b) { return (b <  a ? a = b, true : false); };
auto setmax   = [](auto & a, auto b) { return (b >  a ? a = b, true : false); };
auto setmineq = [](auto & a, auto b) { return (b <= a ? a = b, true : false); };
auto setmaxeq = [](auto & a, auto b) { return (b >= a ? a = b, true : false); };
#define SI(v) static_cast<int>(v.size())
#define RF(e, v) for(auto & e: v)
#define until(e) while(! (e))
#define if_not(e) if(! (e))
#define ef else if
#define UR assert(false)
#define IN(T, ...) T __VA_ARGS__; IN_(__VA_ARGS__);
void IN_() { };
template<typename T, typename ... U> void IN_(T &  a, U &  ... b) { cin >> a; IN_(b ...); };
template<typename T                > void OUT(T && a            ) { cout << a << endl; }
template<typename T, typename ... U> void OUT(T && a, U && ... b) { cout << a << " "; OUT(b ...); }

// ---- ----

template<typename T, int N> struct Matrix {
	vector<vector<T>> v;
	Matrix(T t) {
		init();
		inc(i, N) { v[i][i] = t; }
	}
	Matrix(vector<vector<T>> const & w = { }) { init(w); }
	void init(vector<vector<T>> const & w = { }) {
		v = vector<vector<T>>(N, vector<T>(N, 0));
		assert(w.size() <= N);
		inc(i, w.size()) { assert(w[i].size() <= N);
		inc(j, w[i].size()) {
			v[i][j] = w[i][j];
		}
		}
	}
	vector<T> const & operator[](int i) const { return v[i]; }
	vector<T>       & operator[](int i)       { return v[i]; }
	friend Matrix operator+(Matrix const & a, Matrix const & b) {
		Matrix c;
		inc(i, N) {
		inc(j, N) {
			c[i][j] = a[i][j] + b[i][j];
		}
		}
		return c;
	}
	friend Matrix operator-(Matrix const & a, Matrix const & b) {
		Matrix c;
		inc(i, N) {
		inc(j, N) {
			c[i][j] = a[i][j] - b[i][j];
		}
		}
		return c;
	}
	friend Matrix operator*(Matrix const & a, Matrix const & b) {
		Matrix c;
		inc(i, N) {
		inc(j, N) {
		inc(k, N) {
			c[i][j] += a[i][k] * b[k][j];
		}
		}
		}
		return c;
	}
	friend Matrix operator^(Matrix const & a, LL b) {
		Matrix c(1), e = a; assert(b >= 0);
		while(b) { if(b & 1) { c *= e; } e *= e; b >>= 1; }
		return c;
	}
	friend Matrix & operator+=(Matrix & a, Matrix const & b) { return (a = a + b); }
	friend Matrix & operator-=(Matrix & a, Matrix const & b) { return (a = a - b); }
	friend Matrix & operator*=(Matrix & a, Matrix const & b) { return (a = a * b); }
	friend Matrix & operator^=(Matrix & a, LL             b) { return (a = a ^ b); }
	friend ostream & operator<<(ostream & os, Matrix const & m) {
		inc(i, N) {
		inc(j, N) {
			os << m[i][j] << " ";
		} os << endl;
		} return os;
	}
};

// ----

template<LL M> class ModInt {
private:
	LL v;
	pair<LL, LL> ext_gcd(LL a, LL b) {
		if(b == 0) { assert(a == 1); return { 1, 0 }; }
		auto p = ext_gcd(b, a % b);
		return { p.SE, p.FI - (a / b) * p.SE };
	}
public:
	ModInt(LL vv = 0) { v = vv; if(abs(v) >= M) { v %= M; } if(v < 0) { v += M; } }
	LL get_v() { return v; }
	ModInt inv() { return ext_gcd(M, v).SE; }
	ModInt exp(LL b) {
		ModInt p = 1, a = v; if(b < 0) { a = a.inv(); b = -b; }
		while(b) { if(b & 1) { p *= a; } a *= a; b >>= 1; }
		return p;
	}
	friend bool      operator< (ModInt    a, ModInt   b) { return (a.v <  b.v); }
	friend bool      operator> (ModInt    a, ModInt   b) { return (a.v >  b.v); }
	friend bool      operator<=(ModInt    a, ModInt   b) { return (a.v <= b.v); }
	friend bool      operator>=(ModInt    a, ModInt   b) { return (a.v >= b.v); }
	friend bool      operator==(ModInt    a, ModInt   b) { return (a.v == b.v); }
	friend bool      operator!=(ModInt    a, ModInt   b) { return (a.v != b.v); }
	friend ModInt    operator+ (ModInt    a            ) { return ModInt(+a.v); }
	friend ModInt    operator- (ModInt    a            ) { return ModInt(-a.v); }
	friend ModInt    operator+ (ModInt    a, ModInt   b) { return ModInt(a.v + b.v); }
	friend ModInt    operator- (ModInt    a, ModInt   b) { return ModInt(a.v - b.v); }
	friend ModInt    operator* (ModInt    a, ModInt   b) { return ModInt(a.v * b.v); }
	friend ModInt    operator/ (ModInt    a, ModInt   b) { return a * b.inv(); }
	friend ModInt    operator^ (ModInt    a, LL       b) { return a.exp(b); }
	friend ModInt  & operator+=(ModInt  & a, ModInt   b) { return (a = a + b); }
	friend ModInt  & operator-=(ModInt  & a, ModInt   b) { return (a = a - b); }
	friend ModInt  & operator*=(ModInt  & a, ModInt   b) { return (a = a * b); }
	friend ModInt  & operator/=(ModInt  & a, ModInt   b) { return (a = a / b); }
	friend ModInt  & operator^=(ModInt  & a, LL       b) { return (a = a ^ b); }
	friend istream & operator>>(istream & s, ModInt & b) { s >> b.v; b = ModInt(b.v); return s; }
	friend ostream & operator<<(ostream & s, ModInt   b) { return (s << b.v); }
};

// ----

using MI = ModInt<1'000'000'007>;

const int K = 6;
int main() {
	auto id = [&](int a, int b) { return K * a + b; };
	
	IN(LL, k, m, n);
	Matrix<MI, K * K> v, w, M;
	inc(i, m) {
		IN(int, a, b, c);
		a--; b--; c--;
		if(a == 0) { v[0][id(b, c)] = 1; }
		if(c == 0) { w[id(b, c)][0] = 1; }
		M[id(a, b)][id(b, c)] = 1;
	}
	
	n -= 3;
	OUT((v * (M ^ n) * w)[0][0]);
}