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

long long x[1005];
long long y[1005];
long long r[1005];
vector<int> v[1005];
int bio[1005];
int cikl;

bool t(int a, int b) {
    if ((x[a] - x[b]) * (x[a] - x[b]) + (y[a] - y[b]) * (y[a] - y[b]) == (r[a] + r[b]) * (r[a] + r[b])) return true;
    return false;
}

void rek(int tren, int pr) {
    bio[tren] = 1;
    for (int i = 0; i < v[tren].size(); i++) {
        if (v[tren][i] != pr) {
            if (bio[v[tren][i]] == 1) cikl = 1;
            else rek(v[tren][i], tren);
        }
    }
}

int main() {

    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> x[i] >> y[i] >> r[i];
    }

    for (int i = 0; i < n; i++) {
        for (int j = i+1; j < n; j++) {
            if (t(i, j)) {
                v[i].push_back(j);
                v[j].push_back(i);
            }
        }
    }

    for (int i = 0; i < n; i++) {
        if (bio[i] == 0) {
            cikl = 0;
            rek(i, -1);
            if (cikl == 0) {
                cout << "YES";
                return 0;
            }
        }
    }
    cout << "NO";


    return 0;
}