#! /usr/bin/env python3

import sys
from collections import defaultdict

GRANULARITY = 500 # how coarse is the grid?

N = int(input())

models = tuple(tuple(map(int, input().split())) for _ in range(N))

def close(this, that):
    return (this[0] - that[0]) ** 2 + (this[1] - that[1]) ** 2 <= (2*25.4 + (this[2] + that[2])/2) ** 2

models_for_bucket = defaultdict(list)
for i, m in enumerate(models):
    x, y, diam = m
    models_for_bucket[x//GRANULARITY, y//GRANULARITY] += [(x, y, diam)]

edges = defaultdict(set)
for x_, y_ in models_for_bucket:
    M = set()
    for dx in [-1, 0, 1]:
        for dy in [-1, 0, 1]:
            if (x_ + dx, y_ + dy) in models_for_bucket:
                M.update(models_for_bucket[x_ + dx, y_ + dy])
    for a in M:
        edges[a].update([b for b in M if a != b and close(a,b)])
start = models[0] # arbitrary model
Q = [start]
marked = set([start])
while Q:
    R = []
    for u in Q:
        for v in edges[u]:
            if v in marked:
                continue
            R.append(v)
            marked.add(v)
    Q = R
connected = len(marked) == N
print(connected, file=sys.stderr)
if N <= 6:
    print("yes" if connected else "no")
else:
    print("yes" if (connected and min(len(l) for l in edges.values()) >= 2) else "no")