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

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;

template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

typedef long long ll;
typedef long double ld;
typedef double db;
typedef string str;

typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<str> vstr;

#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back 
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define rsz resize 

const double EPS = 1e-9;
const int MOD = 1e9+7; // 998244353;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};

#ifdef DEBUG
#define DBG if(1)
#else
#define DBG if(0)
#endif

#define dbg(x) cout << "(" << #x << " : " << x << ")" << endl;
// ostreams
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "[";  REP(i, v.size()) out << v[i] << ", ";  out << "]"; return out;}
// istreams
template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }
template<class T, class U>
istream& operator>>(istream& in, pair<T, U> &p){ in >> p.ff >> p.ss; return in; }
//searches
template<typename T, typename U>
T bsl(T lo, T hi, U f){ hi++; T mid; while(lo < hi){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid+1; } return lo; }
template<typename U>
double bsld(double lo, double hi, U f, double p = 1e-9){ int r = 3 + (int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid; } return (lo + hi)/2; }
template<typename T, typename U>
T bsh(T lo, T hi, U f){ lo--; T mid; while(lo < hi){ mid = (lo + hi + 1)/2; f(mid) ? lo = mid : hi = mid-1; } return lo; }
template<typename U>
double bshd(double lo, double hi, U f, double p = 1e-9){ int r = 3+(int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? lo = mid : hi = mid; } return (lo + hi)/2; }
// some more utility functions
template<typename T>
pair<T, int> get_min(vector<T> &v){ typename vector<T> :: iterator it = min_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T>
pair<T, int> get_max(vector<T> &v){ typename vector<T> :: iterator it = max_element(v.begin(), v.end()); return mp(*it, it - v.begin());}        
template<typename T> bool ckmin(T& a, const T& b){return b < a ? a = b , true : false;}
template<typename T> bool ckmax(T& a, const T& b){return b > a ? a = b, true : false;}

struct AcAutomaton{
    int n, m;
    vector<vi> vert;
    vector<vi> hor;
	void read_in(){
		cin >> n >> m;
        vert.rsz(n, vi(3));
        hor.rsz(m, vi(3));
        cin >> vert >> hor;
	}
	void solve(){ 
        vector<vi> arr(6020, vi(6020, 0));
        vi y; y.pb(0); 
        REP(i, n) {
            y.pb(vert[i][0]); y.pb(vert[i][1]);
        }
        REP(i, m) y.pb(hor[i][0]);
        vi x; x.pb(0); 
        REP(i, m){
            x.pb(hor[i][1]); x.pb(hor[i][2]);
        }
        REP(i, n) x.pb(vert[i][2]);
        sort(all(x)); sort(all(y));
        x.erase(unique(all(x)), x.end());
        y.erase(unique(all(y)), y.end());
        REP(i, vert.size()){
            int c = lower_bound(all(x), vert[i][2]) - x.begin();
            int a = lower_bound(all(y), vert[i][0]) - y.begin();
            int b = lower_bound(all(y), vert[i][1]) - y.begin();
            c = 2*c + 1; a = 2*a + 1; b = 2*b + 1;
            FOR(j, a,b+1, 1) arr[j][c] = -1;
        }
        REP(i, hor.size()){
            int d = lower_bound(all(y), hor[i][0]) - y.begin();
            int e = lower_bound(all(x), hor[i][1]) - x.begin();
            int f = lower_bound(all(x), hor[i][2]) - x.begin();
            d = 2*d + 1;
            e = 2*e + 1;
            f = 2*f + 1;
            FOR(j, e, f+1, 1) arr[d][j] = -1;
        }
        auto bfs = [&](pii s){
            queue<pii> q;
            q.push(s);
            arr[s.ff][s.ss] = 1;
            while(!q.empty()){
                pii v = q.front();
                q.pop();
                REP(sm, 4){
                    int ny = v.ff + dy[sm];
                    int nx = v.ss + dx[sm];
                    if(ny > 2*y.size() || ny < 0 || nx > 2*x.size() || nx < 0) continue;
                    if(arr[ny][nx] == 0){
                        arr[ny][nx] = 1;
                        q.push(mp(ny, nx));
                    }
                }
            }
        };
        int sy = 2*(lower_bound(all(y), 0) - y.begin());
        int sx = 2*(lower_bound(all(x), 0) - x.begin());
        bfs(mp(sy, sx)); 
        /* REP(i, pos.size()){ */
        /*     REP(j, pos[i].size()){ */
        /*         cout << (!visited[i][j] ? ".": "*"); */
        /*     } */
        /*     cout << endl; */
        /* } */
        bool infinite = false;
        REP(i, 2*x.size()+1){
            if(arr[0][i] == 1 || arr[2*y.size()][i] == 1) infinite = true;
        }
        REP(i, 2*y.size()+1){
            if(arr[i][0] == 1 || arr[i][2*x.size()] == 1) infinite = true;
        }
        ll ans = 0;
        if(infinite){
            cout << "INF" << endl;
            return;
        }
        REP(i, y.size()-1){
            REP(j, x.size()-1){
                if(arr[2*i+2][2*j+2] == 1){
                    ll dyy = y[i+1] - y[i];
                    ll dxx = x[i+1] - x[i];
                    ans += dyy*dxx;
                }
            }
        }
        cout << ans << endl;
    }
};
    
int main(){
 	ios_base::sync_with_stdio(false);
 	cin.tie(NULL); cout.tie(NULL);
	int tcase = 1;
	while(tcase--){
		AcAutomaton solver;
		solver.read_in();
		solver.solve();
	}
    return 0;
}