Language: C++

                                #include <bits/stdc++.h>
                                #include<iostream>
                                #include<cstdio>
                                #include<vector>
                                #include<queue>
                                #include<map>
                                #include<cstring>
                                #include<string>
                                #include <math.h>
                                #include<algorithm>
                            //    #include <boost/multiprecision/cpp_int.hpp>
                                #include<functional>
                   //     #define int long long
                                #define inf  1000000007
                                #define pa pair<int,int>
                                #define ll long long
                                #define pal pair<double,pa>
                                #define ppa pair<int,int>
                                #define ppap pair<int,pa>
                                #define ssa pair<string,int>
                                #define  mp make_pair
                                #define  pb push_back
                                #define EPS (1e-10)
                                #define equals(a,b) (fabs((a)-(b))<EPS)
                         
                                using namespace std;
                      
                                class Point{
                                	public:
                                	double x,y;
                                	Point(double x=0,double y=0):x(x),y(y) {}
                                	Point operator + (Point p) {return Point(x+p.x,y+p.y);}
                                	Point operator - (Point p) {return Point(x-p.x,y-p.y);}
                                	Point operator * (double a) {return Point(x*a,y*a);}
                                	Point operator / (double a) {return Point(x/a,y/a);}
                                	double absv() {return sqrt(norm());}
                                	double norm() {return x*x+y*y;}
                                	bool operator < (const Point &p) const{
                                		return x != p.x ? x<p.x: y<p.y;
                                	}
                                	bool operator == (const Point &p) const{
                                		return fabs(x-p.x)<EPS && fabs(y-p.y)<EPS;
                                	}
                                };
                                typedef Point Vector;
                         
                                struct Segment{
                                Point p1,p2;
                                };
                                 double dot(Vector a,Vector b){
                                	return a.x*b.x+a.y*b.y;
                                }
                                double cross(Vector a,Vector b){
                                	return a.x*b.y-a.y*b.x;
                                }
                            
    bool parareru(Point a,Point b,Point c,Point d){
    //	if(abs(cross(a-b,d-c))<EPS)cout<<"dd "<<cross(a-b,d-c)<<endl;
    	return abs(cross(a-b,d-c))<EPS;
    }
    double distance_ls_p(Point a, Point b, Point c) {
      if ( dot(b-a, c-a) < EPS ) return (c-a).absv();
      if ( dot(a-b, c-b) < EPS ) return (c-b).absv();
      return abs(cross(b-a, c-a)) / (b-a).absv();
    }
    bool is_intersected_ls(Segment a,Segment b) {
    	if(a.p1==b.p1||a.p2==b.p1||a.p1==b.p2||a.p2==b.p2) return false;
    	if(parareru((a.p2),(a.p1),(a.p1),(b.p2))&&parareru((a.p2),(a.p1),(a.p1),(b.p1))){
    //		cout<<"sss"<<endl;
    		if(dot(a.p1-b.p1,a.p1-b.p2)<EPS) return true;
    		if(dot(a.p2-b.p1,a.p2-b.p2)<EPS) return true;
    		if(dot(a.p1-b.p1,a.p2-b.p1)<EPS) return true;
    		if(dot(a.p1-b.p2,a.p2-b.p2)<EPS) return true;
    		return false;
    	}
      else return ( cross(a.p2-a.p1, b.p1-a.p1) * cross(a.p2-a.p1, b.p2-a.p1) < EPS ) && ( cross(b.p2-b.p1, a.p1-b.p1) * cross(b.p2-b.p1, a.p2-b.p1) < EPS );
    }
     
    double segment_dis(Segment a,Segment b){
    	if(is_intersected_ls(a,b))return 0;
    	double r=distance_ls_p(a.p1, a.p2, b.p1);
    	r=min(r,distance_ls_p(a.p1, a.p2, b.p2));
    	r=min(r,distance_ls_p(b.p1, b.p2, a.p2));
    	r=min(r,distance_ls_p(b.p1, b.p2, a.p1));
    	return r;
    }
    Point intersection_ls(Segment a, Segment b) {
      Point ba = b.p2-b.p1;
      double d1 = abs(cross(ba, a.p1-b.p1));
      double d2 = abs(cross(ba, a.p2-b.p1));
      double t = d1 / (d1 + d2);
     
      return a.p1 + (a.p2-a.p1) * t;
    }
     
                    string itos( int i ) {
                    ostringstream s ;
                    s << i ;
                    return s.str() ;
                    }
                     
                    int gcd(int v,int b){
                    	if(v>b) return gcd(b,v);
                    	if(v==b) return b;
                    	if(b%v==0) return v;
                    	return gcd(v,b%v);
                    }
     
                    double distans(double x1,double y1,double x2,double y2){
                    	double rr=(x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);
                    	return sqrt(rr);
                    	
                    }
                    /*
    int pr[100010];
    //int inv[100010];
    */ 
    int beki(int wa,int rr,int warukazu){
    	if(rr==0) return 1ll;
    	if(rr==1) return wa%warukazu;
    	if(rr%2==1) return (beki(wa,rr-1,warukazu)*wa)%warukazu;
    	int zx=beki(wa,rr/2,warukazu);
    	return (zx*zx)%warukazu;
    }
      /*
    void gya(){
    	pr[0]=1;
    	for(int i=1;i<100010;i++){
    		pr[i]=(pr[i-1]*i)%inf;
    	}
    	for(int i=0;i<100010;i++) inv[i]=beki(pr[i],inf-2);
    	
    }
     
    */
     //sort(ve.begin(),ve.end(),greater<int>());
                             //----------------kokomade tenpure------------
    //vector<double> ans(100000000),ans2(100000000);
int dp[400][400][400]={0};
int l[400],r[400],x[400];
vector<pa> ve[400];
    signed main(){
 	int n,m;
    	cin>>n>>m;
    	for(int i=1;i<=m;i++){
    		cin>>l[i]>>r[i]>>x[i];
    		ve[r[i]].pb(mp(l[i],x[i]));
    	}
    	dp[0][0][0]=1;
    int mod=inf;
    	for(int a=0;a<=n;a++)for(int b=0;b<=n;b++)for(int c=0;c<=n;c++){
    			int m=max({a,b,c});
    		/*
    		if(m==0){
    		dp[m+1][b][c]=dp[a][b][c]%mod;
    		dp[a][m+1][c]=dp[a][b][c]%mod;
    		dp[a][b][m+1]=dp[a][b][c]%mod;
    			continue;
    		}
    		*/
    		
   
    		if(m==n) continue;
    		dp[m+1][b][c]+=dp[a][b][c]%mod;
    		dp[m+1][b][c]%=mod
    		dp[a][m+1][c]+=dp[a][b][c]%mod;
    		dp[a][m+1][c]%=mod
    		dp[a][b][m+1]+=dp[a][b][c]%mod;
    		dp[a][b][m+1]%=mod
    		for(int i=0;i<ve[m+1].size();i++){
    			pa z=ve[m+1][i];
    			if(z.second==1)if(max(b,c)>=z.first) dp[m+1][b][c]=0;
    			if(z.second==2) if(!(max(b,c)>=z.first && min(b,c)<z.first))dp[m+1][b][c]=0;
    			if(z.second==3) if(min(b,c)<z.first)dp[m+1][b][c]=0;
    			
    			if(z.second==1)if(max(a,c)>=z.first) dp[a][m+1][c]=0;
    			if(z.second==2) if(!(max(a,c)>=z.first && min(a,c)<z.first))dp[a][m+1][c]=0;
    			if(z.second==3) if(min(a,c)<z.first)dp[a][m+1][c]=0;
    			
    			if(z.second==1)if(max(b,a)>=z.first) dp[a][b][m+1]=0;
    			if(z.second==2) if(!(max(b,a)>=z.first && min(b,a)<z.first))dp[a][b][m+1]=0;
    			if(z.second==3) if(min(b,a)<z.first)dp[a][b][m+1]=0;
    		}
    		
    	//	cout<<m+1<<" "<<b<<" "<<c<<" "<<dp[m+1][b][c]<<endl;
    	//	cout<<a<<" "<<m+1<<" "<<c<<" "<<dp[a][m+1][c]<<endl;
    	//	cout<<a<<" "<<b<<" "<<m+1<<" "<<dp[a][b][m+1]<<endl;
    		
    	}
    	int ans=0;
    	for(int i=0;i<=n;i++)for(int j=0;j<=n;j++){
    		ans += dp[n][i][j];
    		ans %=mod;
    		ans += dp[i][n][j];
    		ans %=mod;
    		ans += dp[j][i][n];
    		ans %=mod;
    	}
    	cout<<ans<<endl;
    	return 0;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:165:35: error: expected ';' before 'dp'
  165 |                 dp[m+1][b][c]%=mod
      |                                   ^
      |                                   ;
  166 |                 dp[a][m+1][c]+=dp[a][b][c]%mod;
      |                 ~~                 
a.cc:167:35: error: expected ';' before 'dp'
  167 |                 dp[a][m+1][c]%=mod
      |                                   ^
      |                                   ;
  168 |                 dp[a][b][m+1]+=dp[a][b][c]%mod;
      |                 ~~                 
a.cc:169:35: error: expected ';' before 'for'
  169 |                 dp[a][b][m+1]%=mod
      |                                   ^
      |                                   ;
  170 |                 for(int i=0;i<ve[m+1].size();i++){
      |                 ~~~                
a.cc:170:29: error: 'i' was not declared in this scope
  170 |                 for(int i=0;i<ve[m+1].size();i++){
      |                             ^