#include <bits/stdc++.h>
using namespace std;

#define int long long
#define rep(i, n) for (int i = 0; i < (int) (n); i++)
#define reps(i, n) for (int i = 1; i <= (int) (n); i++)
#define all(x) (x).begin(), (x).end()
#define uniq(x) (x).erase(unique(all(x)), (x).end())
#define bit(n) (1LL << (n))
#define dump(x) cerr << #x " = " << (x) << endl
using vint = vector<int>;
using vvint = vector<vint>;
using pint = pair<int, int>;
using vpint = vector<pint>;
template<typename T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
constexpr double PI = 3.1415926535897932384626433832795028;
constexpr int DY[9] = {0, 1, 0, -1, 1, 1, -1, -1, 0};
constexpr int DX[9] = {1, 0, -1, 0, 1, -1, -1, 1, 0};
int sign(int x) { return (x > 0) - (x < 0); }
int gcd(int a, int b) {
    while (b) { swap(a %= b, b); }
    return a;
}
int lcm(int a, int b) { return a / gcd(a, b) * b; }
int cdiv(int a, int b) { return (a - 1 + b) / b; }
template<typename T> void fin(T mes) {
    cout << mes << endl;
    exit(0);
}
template<typename T, typename U> bool chmax(T &a, const U &b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
template<typename T, typename U> bool chmin(T &a, const U &b) {
    if (b < a) {
        a = b;
        return true;
    }
    return false;
}
template<typename T, typename U> ostream &operator<<(ostream &os, const pair<T, U> &rhs) {
    os << "(" << rhs.first << ", " << rhs.second << ")";
    return os;
}
template<typename T> ostream &operator<<(ostream &os, const vector<T> &rhs) {
    os << "{";
    for (auto itr = rhs.begin(); itr != rhs.end(); itr++) {
        os << *itr << (next(itr) != rhs.end() ? ", " : "");
    }
    os << "}";
    return os;
}
template<typename T> ostream &operator<<(ostream &os, const deque<T> &rhs) {
    os << "{";
    for (auto itr = rhs.begin(); itr != rhs.end(); itr++) {
        os << *itr << (next(itr) != rhs.end() ? ", " : "");
    }
    os << "}";
    return os;
}
template<typename T> ostream &operator<<(ostream &os, const set<T> &rhs) {
    os << "{";
    for (auto itr = rhs.begin(); itr != rhs.end(); itr++) {
        os << *itr << (next(itr) != rhs.end() ? ", " : "");
    }
    os << "}";
    return os;
}
template<typename T, typename U> ostream &operator<<(ostream &os, const map<T, U> &rhs) {
    os << "{";
    for (auto itr = rhs.begin(); itr != rhs.end(); itr++) {
        os << *itr << (next(itr) != rhs.end() ? ", " : "");
    }
    os << "}";
    return os;
}
struct setup {
    static constexpr int PREC = 20;
    setup() {
        cout << fixed << setprecision(PREC);
        cerr << fixed << setprecision(PREC);
    };
} setup;

template<int MOD = 1000000007>
struct mod_int {
    int val;
    mod_int(long long val_ = 0) : val(val_ % MOD) { if (val < 0) { val += MOD; }}
    bool operator==(const mod_int &rhs) const { return val == rhs.val; }
    bool operator!=(const mod_int &rhs) const { return std::rel_ops::operator!=(*this, rhs); }
    mod_int &operator+=(const mod_int &rhs) {
        if ((val += rhs.val) >= MOD) { val -= MOD; }
        return *this;
    }
    mod_int &operator-=(const mod_int &rhs) {
        if ((val += MOD - rhs.val) >= MOD) { val -= MOD; }
        return *this;
    }
    mod_int &operator*=(const mod_int &rhs) {
        val = (int) ((long long) val * rhs.val % MOD);
        return *this;
    }
    mod_int &operator/=(const mod_int &rhs) { return *this *= rhs.inv(); }
    mod_int operator+() const { return *this; }
    mod_int operator-() const { return -val; }
    mod_int operator++() { return *this += 1; }
    mod_int operator--() { return *this -= 1; }
    mod_int operator++(signed) {
        const mod_int ret(*this);
        ++*this;
        return ret;
    }
    mod_int operator--(signed) {
        const mod_int ret(*this);
        --*this;
        return ret;
    }
    mod_int operator+(const mod_int &rhs) const { return mod_int(*this) += rhs; }
    mod_int operator-(const mod_int &rhs) const { return mod_int(*this) -= rhs; }
    mod_int operator*(const mod_int &rhs) const { return mod_int(*this) *= rhs; }
    mod_int operator/(const mod_int &rhs) const { return mod_int(*this) /= rhs; }
    mod_int inv() const {
        assert(val != 0);
        int a = val, b = MOD, x = 1, u = 0;
        while (b) {
            int t = a / b;
            std::swap(a -= t * b, b);
            std::swap(x -= t * u, u);
        }
        return x;
    }
    mod_int pow(long long n) const {
        if (n < 0) { return pow(-n).inv(); }
        mod_int ret = 1, mul = *this;
        while (n) {
            if (n & 1) { ret *= mul; }
            mul *= mul;
            n >>= 1;
        }
        return ret;
    }
    friend std::istream &operator>>(std::istream &is, mod_int &rhs) {
        long long v;
        is >> v;
        rhs = v;
        return is;
    }
    friend std::ostream &operator<<(std::ostream &os, const mod_int &rhs) { return os << rhs.val; }
    struct combination {
        std::vector<mod_int> fact{1, 1}, f_inv{1, 1}, inv{0, 1};
        void calc(int n) {
            while (fact.size() <= n) {
                int i = fact.size();
                fact.push_back(fact[i - 1] * i);
                inv.push_back(-inv[MOD % i] * (MOD / i));
                f_inv.push_back(f_inv[i - 1] * inv[i]);
            }
        }
        mod_int P(int n, int r) { return r < 0 || n < r ? 0 : (calc(n), fact[n] * f_inv[n - r]); }
        mod_int C(int n, int r) { return r < 0 || n < r ? 0 : (calc(n), fact[n] * f_inv[r] * f_inv[n - r]); }
        mod_int H(int n, int r) { return C(n + r - 1, r); }
    };
};
using mint = mod_int<>;

template<typename M>
struct lazy_segment_tree {
    using T = typename M::T;
    using E = typename M::E;
    int n;
    std::vector<T> data;
    std::vector<E> lazy;
    lazy_segment_tree(int n) : n(n), data(n << 1, M::id_T()), lazy(n << 1, M::id_E()) {}
    lazy_segment_tree(const std::vector<T> &src) : n(src.size()), data(n << 1), lazy(n << 1, M::id_E()) {
        std::copy(src.begin(), src.end(), data.begin() + n);
        for (int i = n - 1; i > 0; i--) { data[i] = M::op_TT(data[i << 1 | 0], data[i << 1 | 1]); }
    }
    void propagate(int i) {
        if (i < 1) { return; }
        data[i] = M::op_TE(data[i], lazy[i]);
        if (i < n) {
            lazy[i << 1 | 0] = M::op_EE(lazy[i << 1 | 0], lazy[i]);
            lazy[i << 1 | 1] = M::op_EE(lazy[i << 1 | 1], lazy[i]);
        }
        lazy[i] = M::id_E();
    }
    void apply(int l, int r, const E &x) {
        l += n, r += n - 1;
        for (int i = std::__lg(r); i > 0; i--) {
            propagate(l >> i);
            propagate(r >> i);
        }
        auto update = [&](int i) { lazy[i] = M::op_EE(lazy[i], x), propagate(i); };
        for (int i = l, j = r + 1; i < j; i >>= 1, j >>= 1) {
            if (i & 1) { update(i++); }
            if (j & 1) { update(--j); }
        }
        while (l >>= 1, r >>= 1) {
            data[l] = M::op_TT(M::op_TE(data[l << 1 | 0], lazy[l << 1 | 0]),
                               M::op_TE(data[l << 1 | 1], lazy[l << 1 | 1]));
            data[r] = M::op_TT(M::op_TE(data[r << 1 | 0], lazy[r << 1 | 0]),
                               M::op_TE(data[r << 1 | 1], lazy[r << 1 | 1]));
        }
    }
    T fold(int l, int r) {
        l += n, r += n - 1;
        for (int i = std::__lg(r); i > 0; i--) { propagate(l >> i), propagate(r >> i); }
        T a = M::id_T(), b = M::id_T();
        for (r++; l < r; l >>= 1, r >>= 1) {
            if (l & 1) { propagate(l), a = M::op_TT(a, data[l++]); }
            if (r & 1) { propagate(--r), b = M::op_TT(data[r], b); }
        }
        return M::op_TT(a, b);
    }
};

struct rsq_and_rcq {
    using T = mint;
    using E = mint;
    static T id_T() { return 0; };
    static E id_E() { return 1; };
    static T op_TT(const T &a, const T &b) { return a + b; }
    static E op_EE(const E &a, const E &b) { return a * b; }
    static T op_TE(const T &a, const E &b) { return a * b; }
};

signed main() {
    int N, M;
    cin >> N >> M;
    vector<tuple<int, int, int>> RLP(M);
    rep(i, M) {
        int L, R, P;
        cin >> L >> R >> P;
        RLP[i] = {R, L, P};
    }
    sort(all(RLP));
    lazy_segment_tree<rsq_and_rcq> lst(vector<mint>(N + 1, 1));
    int last = 0;
    rep(i, M) {
        auto[R, L, P]=RLP[i];
        for (int j = last + 1; j < R; j++) {
            lst.apply(j, j + 1, lst.fold(0, j));
            lst.apply(0, j, 2);
        }
        last = R;
        if (P == 0) {
            lst.apply(R, R + 1, lst.fold(0, R));
            lst.apply(0, L, 0);
            lst.apply(L, R, 2);
        } else { lst.apply(L, R + 1, 0); }
    }
    for (int j = last + 1; j <= N; j++) {
        lst.apply(j, j + 1, lst.fold(0, j));
        lst.apply(0, j, 2);
    }
    cout << lst.fold(0, N + 1) << endl;
}