#include <bits/stdc++.h>
 
using namespace std;
 
#define DEBUG(x) cerr<<#x<<": "<<x<<endl;
#define DEBUG_VEC(v) cerr<<#v<<":";for(int i=0;i<v.size();i++) cerr<<" "<<v[i]; cerr<<endl;
#define DEBUG_MAT(v) cerr<<#v<<endl;for(int i=0;i<v.size();i++){for(int j=0;j<v[i].size();j++) {cerr<<v[i][j]<<" ";}cerr<<endl;}
typedef long long ll;
#define int ll
 
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
#define pii pair<int,int>
#define pis pair<int,string>
#define psi pair<string,int>
#define pll pair<ll,ll>
template<class S, class T> pair<S, T> operator+(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first + t.first, s.second + t.second); }
template<class S, class T> pair<S, T> operator-(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first - t.first, s.second - t.second); }
template<class S, class T> ostream& operator<<(ostream& os, pair<S, T> p) { os << "(" << p.first << ", " << p.second << ")"; return os; }
#define X first
#define Y second
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<=(int)(n);i++)
#define rrep(i,n) for(int i=(int)(n)-1;i>=0;i--)
#define rrep1(i,n) for(int i=(int)(n);i>0;i--)
#define REP(i,a,b) for(int i=a;i<b;i++)
#define in(x, a, b) (a <= x && x < b)
#define all(c) c.begin(),c.end()
template<class T> bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a = b; return 1; } return 0; }
#define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end());
const ll inf = 1000000001;
const ll INF = (ll)1e18 + 1;
const long double pi = 3.1415926535897932384626433832795028841971L;
#define Sp(p) cout<<setprecision(25)<< fixed<<p<<endl;
//int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
//int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };
vi dx = {1, 0, -1, 0}, dy = {0, 1, 0, -1};
vi dx2 = { 1,1,0,-1,-1,-1,0,1 }, dy2 = { 0,1,1,1,0,-1,-1,-1 };
#define fio() cin.tie(0); ios::sync_with_stdio(false);
const ll MOD = 1000000007;
//const ll MOD = 998244353;
// #define mp make_pair
//#define endl '\n'



class UnionFind {
public:
  int n;
  vi par; //�e
  vi ran; //�؂̐[��
  vi num; //�v�f��
  int g; // group��
 
  UnionFind(int _n) {
    n = _n;
    g = n;
    par.resize(n); ran.resize(n); num.resize(n);
    for (int i = 0; i < n; i++) {
      par[i] = i; ran[i] = 0; num[i] = 1;
    }
  }
 
  //�؂̍������߂�
  int find(int x) {
    if (par[x] == x) {
      return x;
    }
    else {
      return par[x] = find(par[x]);
    }
  }
 
  //x��y�̑�����W���𕹍�
  void unite(int x, int y) {
    x = find(x); y = find(y);
    int numsum = num[x] + num[y];
    if (x == y) {
      return;
    }
    if (ran[x]<ran[y]) {
      par[x] = y;
    }
    else {
      par[y] = x;
      if (ran[x] == ran[y]) {
        ran[x]++;
      }
    }
    num[x] = num[y] = numsum;
    g--;
  }
 
  //x��y�������W���ɑ����邩�ۂ�
  bool same(int x, int y) {
    return find(x) == find(y);
  }
 
};


// 続きは今度書く
signed main() {
    fio();
    int n, m;
    cin >> n >> m;
    using P = pair<ll, pll>;
    vector<P> ylr(m), xud(n);
    set<ll> yst, xst;
    for (int i = -1; i <= 1; i++) {
        yst.insert(i); xst.insert(i);
    }
    yst.insert(-INF); yst.insert(INF);
    xst.insert(-INF); xst.insert(INF);

    map<ll, vector<pll>> y2lr, x2ud;

    rep (i, n) {
        cin >> xud[i].second.first >> xud[i].second.second >> xud[i].first;
        xst.insert(xud[i].first);
        yst.insert(xud[i].second.first); yst.insert(xud[i].second.second); 
        x2ud[xud[i].first].push_back(xud[i].second);
    }
    rep (i, m) {
        cin >> ylr[i].first >> ylr[i].second.first >> ylr[i].second.second;
        yst.insert(ylr[i].first);
        xst.insert(ylr[i].second.first); xst.insert(ylr[i].second.second); 
        y2lr[ylr[i].first].push_back(ylr[i].second);
    }

    map<ll, vector<pll>> y2lr2, x2ud2;
    for (auto itr = y2lr.begin(); itr != y2lr.end(); itr++) {
        sort(all(itr->second));
        vector<pll> lr;
        for (pll temp: itr->second) {
            if (lr.size() == 0 or lr.back().second < temp.first) lr.push_back(temp);
            else chmax(lr.back().second, temp.second);
        }
        y2lr2[itr->first] = lr;
        // itr->second = lr;
    }
    for (auto itr = x2ud.begin(); itr != x2ud.end(); itr++) {
        sort(all(itr->second));
        vector<pll> lr;
        for (pll temp: itr->second) {
            if (lr.size() == 0 or lr.back().second < temp.first) lr.push_back(temp);
            else chmax(lr.back().second, temp.second);
        }
        x2ud2[itr->first] = lr;
        // itr->second = lr;
    }
    y2lr = y2lr2; x2ud = x2ud2;

    vector<pll> lr, ud;
    auto itr = xst.begin();
    ll pre = *itr;
    xst.erase(itr);
    while (xst.size()) {
        auto itr = xst.begin();
        ll x = *itr;
        xst.erase(itr);
        lr.push_back(pll(pre, x));
        pre = x;
    }

    itr = yst.begin();
    pre = *itr;
    yst.erase(itr);
    while (yst.size()) {
        auto itr = yst.begin();
        ll y = *itr;
        yst.erase(itr);
        ud.push_back(pll(pre, y));
        pre = y;
    }

    // DEBUG_VEC(lr);
    // DEBUG_VEC(ud);

    int h = ud.size(), w = lr.size();
    UnionFind uf(h * w);
    
    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            int u = i * w + j;
            ll left = lr[j].first, right = lr[j].second;
            ll up = ud[i].first, down = ud[i].second;
            if (i != h - 1) {
                int ni = i + 1, nj = j;
                int v = ni * w + nj;
                bool flag = true;

                ll y = down;
                auto itr = lower_bound(all(y2lr[y]), pll(left + 1, -INF));
                if (itr != y2lr[y].begin()) {
                    itr--;
                    if (itr->second >= right) flag = false;
                }
                if (flag) uf.unite(u, v);
            }
            if (j != w - 1) {
                int ni = i, nj = j + 1;
                int v = ni * w + nj;
                bool flag = true;

                ll x = right;
                auto itr = lower_bound(all(x2ud[x]), pll(up + 1, -INF));
                if (itr != x2ud[x].begin()) {
                    itr--;
                    if (itr->second >= down) flag = false;
                }
                if (flag) uf.unite(u, v);
            }      
        }
    }

    int root;
    rep (i, h) {
        rep (j, w) {
            if (lr[j].first == 0 and ud[i].first == 0) {
                root = i * w + j;
            }
        }
    }

    // DEBUG_VEC(lr);
    // DEBUG_VEC(ud);

    ll ans = 0;
    rep (i, h) {
        rep (j, w) {
            int u = i * w + j;
            ll left = lr[j].first, right = lr[j].second;
            ll up = ud[i].first, down = ud[i].second;
            // cerr << uf.find(u) << " ";
            if (uf.find(u) == uf.find(root)) {
                if (abs(left) == INF or abs(right) == INF or abs(up) == INF or abs(down) == INF) {
                    cout << "INF" << endl;
                    return 0;
                }
                // DEBUG((right - left) * (down - up));
                ans += (right - left) * (down - up);
            }
        }
        // cerr << endl;
    }
    cout << ans << endl;
}

Measured memory_bytes: 215704