#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
//#pragma GCC optimize(3)
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC target("sse3","sse2","sse")
//#pragma GCC target("avx","sse4","sse4.1","sse4.2","ssse3")
//#pragma GCC target("f16c")
//#pragma GCC optimize("inline","fast-math","unroll-loops","no-stack-protector")
//#pragma GCC diagnostic error "-fwhole-program"
//#pragma GCC diagnostic error "-fcse-skip-blocks"
//#pragma GCC diagnostic error "-funsafe-loop-optimizations"
//#pragma GCC diagnostic error "-std=c++14"
#include "bits/stdc++.h"
#include "ext/pb_ds/tree_policy.hpp"
#include "ext/pb_ds/assoc_container.hpp"

#define PB push_back
#define PF push_front
#define LB lower_bound
#define UB upper_bound
#define fr(x) freopen(x,"r",stdin)
#define fw(x) freopen(x,"w",stdout)
#define REP(x, l, u) for(ll x = l;x<u;x++)
#define RREP(x, l, u) for(ll x = l;x>=u;x--)
#define complete_unique(a) a.erase(unique(begin(a),end(a)),end(a))
#define mst(x, a) memset(x,a,sizeof(x))
#define all(a) begin(a),end(a)
#define rall(a) rbegin(a),rend(a)
#define PII pair<int,int>
#define PLL pair<ll,ll>
#define MP make_pair
#define lowbit(x) ((x)&(-(x)))
#define bitcnt(x) (__builtin_popcountll(x))
#define lson (ind<<1)
#define rson (ind<<1|1)
#define se second
#define fi first
#define sz(x) ((int)x.size())
#define EX0 exit(0);

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
using namespace __gnu_pbds; //required
using namespace std;
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef vector<ll> VLL;
typedef vector<int> VI;
const ll mod = 1e9 + 7;


string to_string (string s) { return '"' + s + '"'; }

string to_string (const char *s) { return to_string ((string) s); }

string to_string (bool b) { return (b ? "true" : "false"); }

template<typename A, typename B>
string to_string (pair<A, B> p) { return "(" + to_string (p.first) + ", " + to_string (p.second) + ")"; }

template<typename A>
string to_string (A v) {
    bool first = true;
    string res = "{";
    for (const auto &x : v) {
        if (!first) { res += ", "; }
        first = false;
        res += to_string (x);
    }
    res += "}";
    return res;
}

void debug_out () { cerr<<endl; }

template<typename Head, typename... Tail>
void debug_out (Head H, Tail... T) {
    cerr<<" "<<to_string (H);
    debug_out (T...);
}

#ifdef LOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define dbg(...) {}
#endif

template<typename T, typename S>
inline bool upmin (T &a, const S &b) { return a > b ? a = b, 1 : 0; }

template<typename T, typename S>
inline bool upmax (T &a, const S &b) { return a < b ? a = b, 1 : 0; }


ull twop (ll x) { return 1ULL<<x; }

ll MOD (ll a, ll m) {
    a %= m;
    if (a < 0)a += m;
    return a;
}

ll inverse (ll a, ll m) {
    a = MOD (a, m);
    if (a <= 1)return a;
    return MOD ((1 - inverse (m, a) * m) / a, m);
}

template<typename T>
T sqr (T x) { return x * x; }

ll gcd (ll a, ll b) {
    a = abs (a), b = abs (b);
    while (b != 0) {
        a %= b;
        swap (a, b);
    }
    return a;
}

ll fast (ll a, ll b) {
    ll ans = 1;
    while (b) {
        if (b & 1)ans *= a;
        a *= a;
        b /= 2;
    }
    return ans;
}

ll fast (ll a, ll b, ll mod) {
    if (b < 0)a = inverse (a, mod), b = -b;
    ll ans = 1;
    while (b) {
        if (b & 1)ans = ans * a % mod;
        a = a * a % mod;
        b /= 2;
    }
    return ans % mod;
}

struct DSU {
    std::vector<int> data;
    
    void init (int n) { data.assign (n, -1); }
    
    bool merge (int y, int x) {
        x = root (x);
        y = root (y);
        if (x != y) {
            if (data[y] < data[x]) std::swap (x, y);
            data[x] += data[y];
            data[y] = x;
        }
        return x != y;
    }
    
    bool same (int x, int y) { return root (x) == root (y); }
    
    int root (int x) { return data[x] < 0 ? x : data[x] = root (data[x]); }
    
    int size (int x) { return -data[root (x)]; }
};


VLL values;
ll n[2];
namespace SOLVE {
    
    
    bool connect[6010][6010][2];
    bool vis[6010][6010];
    
    vector<pair<PLL, ll>> seg[2];
    
    ll get (ll x) {
        return LB (all(values), x) - values.begin ();
    }
    
    ll ans = 0;
    const int dx[] = {1, -1, 0, 0};
    const int dy[] = {0, 0, 1, -1};
    
    void dfs (int x, int y) {
        queue<PII > q;
        q.push (MP (x, y));
        vis[x][y] = 1;
        while (sz(q)) {
            auto[x, y] = q.front ();
            q.pop ();
            ans += 1ll * (values[x + 1] - values[x]) * (values[y + 1] - values[y]);
            if (x == 0) {
                cout<<"INF";
                exit (0);
            }
            REP(d, 0, 4) {
                int tx = x + dx[d], ty = y + dy[d];
                if (tx >= 0 and tx < sz(values) - 1 and ty >= 0 and ty < sz(values) - 1 and !vis[tx][ty]) {
                    if (tx != x) {
                        if (connect[max (tx, x)][y][0]) {
                            q.push ({tx, ty});
                            vis[tx][ty] = 1;
                        }
                    } else {
                        if (connect[x][max (ty, y)][1]) {
                            q.push ({tx, ty});
                            vis[tx][ty] = 1;
                        }
                    }
                }
            }
        }
    }
    
    void main () {
        values.PB (-2e9);
        values.PB (2e9);
        values.PB (0);
        REP(i, 0, 2)cin>>n[i];
        REP(i, 0, 2) {
            REP(j, 0, n[i]) {
                ll a, b, c;
                cin>>a>>b>>c;
                values.PB (a);
                values.PB (b);
                values.PB (c);
                if (i == 0)seg[i].PB (MP (MP (a, b), c));
                else seg[i].PB (MP (MP (b, c), a));
                dbg(seg[i].back ());
            }
        }
        sort (all(values));
        complete_unique(values);
        dbg(get (0));
        REP(i, 0, 2) {
            for (auto&[a, b]:seg[i]) {
                auto&[x, y] = a;
                x = get (x);
                y = get (y);
                b = get (b);
            }
        }
        auto cmp = [] (const pair<PLL, ll> &a, const pair<PLL, ll> &b) { return a.se < b.se; };
        REP(i, 0, 2) {
            sort (all(seg[i]), cmp);
        }
        dbg(values);
        REP(row, 1, sz (values) - 1) {
            REP(col, 0, sz (values) - 1) {
                connect[row][col][0] = 1;
            }
            auto[l, r] = equal_range (all(seg[0]), MP (MP (0, 0), row), cmp);
            while (l != r) {
                auto[x, y] = l->fi;
                REP(k, x, y) {
                    dbg(values[k], values[row]);
                    connect[row][k][0] = 0;
                }
                l++;
            }
        }
        REP(col, 1, sz (values) - 1) {
            REP(row, 0, sz (values) - 1) {
                connect[row][col][1] = 1;
            }
            auto[l, r] = equal_range (all(seg[1]), MP (MP (0, 0), col), cmp);
            while (l != r) {
                auto[x, y] = l->fi;
                REP(k, x, y) {
                    dbg(values[k], values[col]);
                    connect[k][col][1] = 0;
                }
                l++;
            }
        }
        dfs (get (0), get (0));
        cout<<ans;
        
    }
}


signed main () {
#ifdef LOCAL
    fr("/Users/zhangqingchuan/Desktop/cp/cp/input.txt");
    fw("/Users/zhangqingchuan/Desktop/cp/cp/output.txt");
#endif
    
    
    int t = 1;
//    cin >> t;
    for (int i = 1; i <= t; i++) {
//        cout<<"Case #"<<i<<": ";
        SOLVE::main ();
        
    }








//    clock_t st = clock();
//    while(clock() - st < 3.0 * CLOCKS_PER_SEC){
//
//    }
    
    
    
    
    
    
    return 0;
}


Measured memory_bytes: 109424