#!/usr/bin/python
n = int(raw_input())
gd = [map(int, raw_input().split()) for _ in xrange(n)]
ok = 0
for i, (g, d) in enumerate(gd):
    v = (g - 30000 * d) * 6
    if v >= 30000:
        ok = 1
        break
if not ok:
    print 'NO'
else:
    print 'YES'
    print '\n'.join(str(i+1) * 6)