#define _USE_MATH_DEFINES
#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define MT make_tuple
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
#define RT return
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;
using vll = vector<ll>;

template<class Val, class Cmp>
class DynamicRMQ {
    int n;
    Val init;
    vector<Val> dat;
    Cmp cmp;
    inline Val query(int a, int b, int k, int l, int r) {
        if (r <= a || b <= l) return init;
        if (a <= l && r <= b) return dat[k];
        else {
            Val vl, vr;
            vl = query(a, b, k << 1, l, (l + r) >> 1);
            vr = query(a, b, (k << 1) | 1, (l + r) >> 1, r);
            return cmp(vl, vr) ? vl : vr;
        }
    }
public:
    DynamicRMQ() {}
    DynamicRMQ(int n_, Val init_) :n(1), init(init_) {
        for (; n<n_; n <<= 1);
        dat = vector<Val>(n << 1, init);
    }
    void update(int k, Val a) {
        k += n;
        dat[k] = a;
        while (k > 1) {
            k >>= 1;
            dat[k] = cmp(dat[k << 1], dat[(k << 1) | 1]) ? dat[k << 1] : dat[(k << 1) | 1];
        }
    }
    Val query(int a, int b) {
        return query(a, b, 1, 0, n);
    }
};

typedef DynamicRMQ<long long, less<long long> > RMinQ64;
typedef DynamicRMQ<long long, greater<long long> > RMaxQ64;
typedef DynamicRMQ<int, less<int> > RMinQ32;
typedef DynamicRMQ<int, greater<int> > RMaxQ32;

vector<bool> f(vi a, vi b, vi c) {
    static const int LIM = 10004;
    int n = sz(a);
    vector<bool> res(n);
    RMaxQ32 bma(LIM, -1), cma(LIM, -1);

    vector<tuple<int, int, int, int>> abc(n);
    rep(i, n)abc[i] = tie(a[i], b[i], c[i], i);
    sort(all(abc));
    reverse(all(abc));
    vi id(n);
    rep(i, n) {
        tie(a[i], b[i], c[i], id[i]) = abc[i];
    }

    for (int i = 0; i < n;) {
        int j = i;
        while (j < n && a[i] == a[j]) {
            if (bma.query(c[j], LIM) >= b[j]
                || cma.query(b[j], LIM) >= c[j]) {
                res[id[j]] = true;
            }
            j++;
        }
        for (; i < j; ++i) {
            bma.update(c[i], max(bma.query(c[i], c[i] + 1), b[i]));
            cma.update(b[i], max(cma.query(b[i], b[i] + 1), c[i]));
        }
    }

    return res;
}

void solve() {
    int N;
    cin >> N;
    vi P(N), T(N), R(N);
    rep(i, N) {
        cin >> P[i] >> T[i] >> R[i];
    }

    auto fp = f(P, T, R);
    auto ft = f(T, P, R);
    auto fr = f(R, P, T);

    rep(i, N) {
        if (!fp[i] && !ft[i] && !fr[i]) {
            cout << i + 1 << endl;
        }
    }
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout << fixed << setprecision(15);
	solve();
	return 0;
}