#ifdef DEBUG
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <iostream>
#include <cassert>
#include <sstream>
#include <fstream>
#include <functional>
#include <set>
#include <bitset>
#include <string>
#include <utility>
#include <queue>
#include <deque>
#include <vector>
#include <map>
#else
#include <bits/stdc++.h>
#endif

#ifdef DEBUG
#define debug(...) fprintf(stderr, __VA_ARGS__)
#else
#define debug(...)
#endif

#define rep(i, n) for (int i = 0, i##_end_ = (n); i < i##_end_; ++i)
#define per(i, n) for (int i = (n) - 1; i >= 0; --i)
#define forn(i, l, r) for (int i = (l), i##_end_ = (r); i <= i##_end_; ++i)
#define nrof(i, r, l) for (int i = (r), i##_end_ = (l); i >= i##_end_; --i)
#define X first
#define Y second
#define mp make_pair
#define pb push_back
#define SZ(x) (int)((x).size())
#define ALL(x) (x).begin(), (x).end()

using namespace std;

typedef vector<int> vi;

typedef pair<int, int> pii;

typedef long long LL;

template<typename T> inline bool chkmax(T &x, const T &y) {
	return x < y ? x = y, 1 : 0;
}

#ifdef DEBUG
char *input_file, *output_file;
#endif

struct IO {
	static const int maxn = (1 << 25) + 10;

	char a[maxn], *s, b[maxn], *t;

	void INPUT() {
		s = a;
		t = b;
		#ifdef DEBUG
		FILE *f = fopen(input_file, "r");
		a[fread(a, 1, sizeof a, f)] = 0;
		#else
		a[fread(a, 1, sizeof a, stdin)] = 0;
		#endif
	}

	void OUTPUT() {
#ifdef DEBUG
		FILE *f = fopen(output_file, "w");
		fwrite(b, 1, t - b, f);
#else
		fwrite(b, 1, t - b, stdout);
#endif
	}

	operator int() {
		int x = 0;
		while(*s != '-' && (*s < '0' || *s > '9')) {
			++s;
		}
		bool f = 0;
		if(*s == '-') {
			f = 1;
			++s;
		}
		while(*s >= '0' && *s <= '9') {
			(x *= 10) += *s - '0';
			++s;
		}
		if(f) {
			x = -x;
		}
		return x;
	}

	operator LL() {
		LL x = 0;
		while(*s != '-' && (*s < '0' || *s > '9')) {
			++s;
		}
		bool f = 0;
		if(*s == '-') {
			f = 1;
			++s;
		}
		while(*s >= '0' && *s <= '9') {
			(x *= 10) += *s - '0';
			++s;
		}
		if(f) {
			x = -x;
		}
		return x;
	}

	operator char() {
		while(*s <= 32) {
			++s;
		}
		char ret = *s;
		++s;
		return ret;
	}

	inline void out(int x) {
		if(!x) {
			*t++ = '0';
			return;
		}
		if(x < 0) {
			*t++ = '-';
			x = -x;
		}
		static char c[20], *i;
		i = c;
		while(x) {
			int y = x / 10;
			*i++ = x - y * 10 + '0';
			x = y;
		}
		while(i != c) {
			*t++ = *--i;
		}
		return;
	}

	inline void out(int x, char C) {
		if(!x) {
			*t++ = '0';
			*t++ = C;
			return;
		}
		if(x < 0) {
			*t++ = '-';
			x = -x;
		}
		static char c[20], *i;
		i = c;
		while(x) {
			int y = x / 10;
			*i++ = x - y * 10 + '0';
			x = y;
		}
		while(i != c) {
			*t++ = *--i;
		}
		*t++ = C;
		return;
	}

	inline void out(LL x) {
		if(!x) {
			*t++ = '0';
			return;
		}
		if(x < 0) {
			*t++ = '-';
			x = -x;
		}
		static char c[20], *i;
		i = c;
		while(x) {
			LL y = x / 10;
			*i++ = x - y * 10 + '0';
			x = y;
		}
		while(i != c) {
			*t++ = *--i;
		}
		return;
	}

	inline void out(LL x, char C) {
		if(!x) {
			*t++ = '0';
			*t++ = C;
			return;
		}
		if(x < 0) {
			*t++ = '-';
			x = -x;
		}
		static char c[20], *i;
		i = c;
		while(x) {
			LL y = x / 10;
			*i++ = x - y * 10 + '0';
			x = y;
		}
		while(i != c) {
			*t++ = *--i;
		}
		*t++ = C;
		return;
	}

	inline void out(char c) {
		*t++ = c;
		return;
	}

	inline void out(char *s) {
		while(*s >= ' ') {
			*t++ = *s++;
		}
		return;
	}
}io;

void Main();

int main(int argc, char *argv[]) {
#ifdef DEBUG
	input_file = argv[1];
	output_file = argv[2];
#endif
	io.INPUT();
	Main();
	io.OUTPUT();
	return 0;
}

//---------------------------------------------------------------------------------------head---------------------------------------------------------------------------------------

const int maxn = 330;

const int mod =	1e9 + 7;

int n, m, ans, tmp;
int dp[maxn][maxn][maxn], head[maxn], nxt[maxn], l[maxn], x[maxn];

bool check(int i, int r, int b, int g) {
	for (int j = head[i]; j; j = nxt[j]) {
		int cnt = 0;
		if(r >= l[j]) {
			++cnt;
		}
		if(b >= l[j]) {
			++cnt;
		}
		if(g >= l[j]) {
			++cnt;
		}
		if(cnt != x[j]) {
			return 0;
		}
	}
	return 1;
}

void Main() {
	n = io;
	m = io;
	forn(i, 1, m) {
		l[i] = io;
		int r = io;
		x[i] = io;
		nxt[i] = head[r];
		head[r] = i;
	}
	dp[0][0][0] = 1;
	forn(r, 0, n) {
		forn(b, 0, n) {
			forn(g, 0, n) {
				int i = max(r, max(b, g));
				if(!check(i, r, b, g)) {
					continue;
				}
				if(i == n) {
					debug("dp[%d][%d][%d] = %d\n", r, b, g, dp[r][b][g]);
					(ans += dp[r][b][g]) %= mod;
				}
				else if(tmp = dp[r][b][g]) {
					(dp[i + 1][b][g] += tmp) %= mod;
					(dp[r][i + 1][g] += tmp) %= mod;
					(dp[r][b][i + 1] += tmp) %= mod;
				}
			}
		}
	}
	io.out(ans, '\n');
	return;
}


Measured memory_bytes: 133248