import sys
input = sys.stdin.readline

from decimal import *
getcontext().prec = 30


from bisect import bisect_left

from math import gcd

L=[[0] for i in range(3)]

N=int(input())

for i in range(N):
    p,a,b=map(int,input().split())

    GCD=gcd(a,b)
    a//=GCD
    b//=GCD

    L[p].append(Decimal(b)/Decimal(a+b))

L[0].sort()
L[1].sort()
L[2].sort()

ANS=0

SET=set(L[2])

for x in L[0]:
    for y in L[1]:
        if x+y>1:
            break
        MAX=max(x,y)

        k=bisect_left(L[2],1-MAX)

        #print(x,y,L[2],k,1-MAX)

        ANS+=k

        z=x+y
        if z<1-MAX and 1-z in SET:
            #print(x,y,z)
            ANS-=1

print(ANS)