#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return true; } return false; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return true; } return false; }
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define mp make_pair
#define si(x) int(x.size())
const int mod=1000000007,MAX=10000005;
const ll INF=mod;

struct UF{
    int n;
    vector<int> par,size;
    vector<ll> S;
    
    void init(int n_){
        n=n_;
        par.assign(n,-1);
        size.assign(n,1);
        S.assign(n,0);
        
        for(int i=0;i<n;i++){
            par[i]=i;
        }
    }
    
    int root(int a){
        if(par[a]==a) return a;
        else return par[a]=root(par[a]);
    }
    
    void unite(int a,int b){
        if(root(a)!=root(b)){
            size[root(a)]+=size[root(b)];
            S[root(a)]+=S[root(b)];
            par[root(b)]=root(a);
        }
    }
    
    bool check(int a,int b){
        return root(a)==root(b);
    }
};

bool out[MAX][2];

int main(){
    
    std::ifstream in("text.txt");
    std::cin.rdbuf(in.rdbuf());
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    int N,M;cin>>N>>M;
    map<ll,int> MX,MY;
    
    vector<ll> X1(N+M+5),X2(N+M+5),Y1(N+M+5),Y2(N+M+5);
    
    UF uf;
    
    for(int i=0;i<N+M;i++){
        int a,b,c;cin>>a>>b>>c;
        /*a*=100000000;
        b*=100000000;
        c*=100000000;*/
        if(i<N){
            MX[a]=1;
            MX[b]=1;
            MY[c]=1;
            
            X1[i]=a;
            X2[i]=b;
            Y1[i]=c;
            Y2[i]=c;
        }else{
            MY[b]=1;
            MY[c]=1;
            MX[a]=1;
            
            X1[i]=a;
            X2[i]=a;
            Y1[i]=b;
            Y2[i]=c;
        }
    }
    MX[0]=1;
    MY[0]=1;
    MX[INF]=1;
    MX[-INF]=1;
    MY[INF]=1;
    MY[-INF]=1;
    
    X1[N+M+1]=-INF;
    X2[N+M+1]=INF;
    X1[N+M+2]=-INF;
    X2[N+M+2]=INF;
    X1[N+M+3]=-INF;
    X2[N+M+3]=-INF;
    X1[N+M+4]=INF;
    X2[N+M+4]=INF;
    
    Y1[N+M+1]=-INF;
    Y2[N+M+1]=-INF;
    Y1[N+M+2]=INF;
    Y2[N+M+2]=INF;
    Y1[N+M+3]=-INF;
    Y2[N+M+3]=INF;
    Y1[N+M+4]=-INF;
    Y2[N+M+4]=INF;
    
    int idx=1,idy=1;
    for(auto it=MX.begin();it!=MX.end();it++,idx++){
        MX[(*it).first]=idx;
        //cout<<(*it).first<<" ";
    }
    //cout<<endl;
    for(auto it=MY.begin();it!=MY.end();it++,idy++){
        MY[(*it).first]=idy;
        //cout<<(*it).first<<" ";
    }
    //cout<<endl;
    
    for(int i=0;i<N+M+5;i++){
        X1[i]=MX[X1[i]];
        Y1[i]=MY[Y1[i]];
        X2[i]=MX[X2[i]];
        Y2[i]=MY[Y2[i]];
    }
    
    vector<ll> xpos(idx-1,INF),ypos(idy-1,INF);
    
    for(auto x:MX){
        xpos[x.se-1]=x.fi;
    }
    
    for(auto y:MY){
        ypos[y.se-1]=y.fi;
    }
    
    /*for(int i=0;i<idx-1;i++){
     cout<<xpos[i]<<" ";
     }
     cout<<endl;
     
     for(int i=0;i<idy-1;i++){
     cout<<ypos[i]<<" ";
     }
     cout<<endl;*/
    
    uf.init(idx*idy);
    
    for(int i=0;i<idx-2;i++){
        for(int j=0;j<idy-2;j++){
            uf.S[(i+1)+(j+1)*idx]=(xpos[i+1]-xpos[i])*(ypos[j+1]-ypos[j]);
            
            //cout<<i<<" "<<j<<" "<<uf.S[i+j*idx]<<endl;
        }
        //cout<<endl;
    }
    
    //vector<pair<int,int>> out;
    
    for(int i=0;i<N+M+5;i++){
        for(int j=Y1[i];j<Y2[i];j++){
            out[X1[i]-1+j*idx][0]=1;
            out[X2[i]-1+j*idx][0]=1;
            //out.push_back({X1[i]-1+j*idx,X1[i]+j*idx});
            //out.push_back({X2[i]-1+j*idx,X2[i]+j*idx});
        }
        
        for(int j=X1[i];j<X2[i];j++){
            out[j+(Y1[i]-1)*idx][1]=1;
            out[j+(Y2[i]-1)*idx][1]=1;
            //out.push_back({j+(Y1[i]-1)*idx,j+Y1[i]*idx});
            //out.push_back({j+(Y2[i]-1)*idx,j+Y2[i]*idx});
        }
    }
    
    for(int j=0;j<idy;j++){
        for(int i=0;i+1<idx;i++){
            if(out[i+j*idx][0]==0){
                uf.unite(i+j*idx,i+1+j*idx);
                //cout<<i<<" "<<j<<endl;
            }
        }
    }
    
    for(int i=0;i<idx;i++){
        for(int j=0;j+1<idy;j++){
            if(out[i+j*idx][1]==0){
                uf.unite(i+j*idx,i+(j+1)*idx);
                //cout<<i<<" "<<j<<endl;
            }
        }
    }
    //cout<<idx<<" "<<idy<<endl;
    //cout<<X1[N+M]<<" "<<Y1[N+M]<<endl;
    if(uf.check(X1[N+M]+Y1[N+M]*idx,1+idx)) cout<<"INF\n";
    else cout<<uf.S[uf.root(X1[N+M]+Y1[N+M]*idx)]<<endl;
    
    /*for(int i=0;i<idx;i++){
        for(int j=0;j<idy;j++){
            if(uf.S[uf.root(i+j*idx)]>=10000) cout<<"INF ";
            else cout<<uf.S[uf.root(i+j*idx)]<<" ";
        }
        cout<<endl;
    }
    
    for(int i=0;i<N+M+5;i++){
        cout<<X1[i]<<" "<<X2[i]<<" "<<Y1[i]<<" "<<Y2[i]<<endl;
    }*/
}


Measured memory_bytes: 162272