Submission #19514340


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from collections import defaultdict
import math
mod=10**9+7
n=int(input())
P=defaultdict(int)
M=defaultdict(int)
c=0
for _ in range(n):
    a,b=map(int,input().split())
    if a==0 and b==0:
        c+=1
        continue
    elif a==0:
        if b<0:
            M[(1,0)]+=1
        else:
            P[(0,1)]+=1
        continue
    elif b==0:
        if a<0:
            M[(0,1)]+=1
        else:
            P[(1,0)]+=1
        continue
    g=math.gcd(a,b)
    a,b=a//g,b//g
    if a*b<0:
        M[(abs(b),abs(a))]+=1
    else:
        P[(a,b)]+=1
D_pow=dict()
def my_pow(k):
    if k in D_pow:
        return D_pow[k]
    else:
        D_pow[k]=pow(2,k,mod)
        return D_pow[k]
ans=my_pow(c)
for k in P.keys():
    if k in M:
        tmp=my_pow(P[k])+my_pow(M[k])-1
        tmp%=mod
        ans*=tmp
        ans%=mod
        M[k]=0
    else:
        ans*=my_pow(P[k])
        ans%=mod
for v in M.values():
    ans*=my_pow(v)
    ans%=mod
ans=(ans-1)%mod
print(ans)

Submission Info

Submission Time
Task E - ∙ (Bullet)
User bis
Language PyPy3 (7.3.0)
Score 0
Code Size 1026 Byte
Status WA
Exec Time 555 ms
Memory 120688 KB

Judge Result

Set Name Sample Subtask1
Score / Max Score 0 / 0 0 / 500
Status
AC × 2
AC × 15
WA × 8
Set Name Test Cases
Sample sample_01.txt, sample_02.txt
Subtask1 sample_01.txt, sample_02.txt, sub1_01.txt, sub1_02.txt, sub1_03.txt, sub1_04.txt, sub1_05.txt, sub1_06.txt, sub1_07.txt, sub1_08.txt, sub1_09.txt, sub1_10.txt, sub1_11.txt, sub1_12.txt, sub1_13.txt, sub1_14.txt, sub1_15.txt, sub1_16.txt, sub1_17.txt, sub1_18.txt, sub1_19.txt, sub1_20.txt, sub1_21.txt
Case Name Status Exec Time Memory
sample_01.txt AC 90 ms 64996 KB
sample_02.txt AC 58 ms 64868 KB
sub1_01.txt AC 538 ms 120688 KB
sub1_02.txt AC 60 ms 64976 KB
sub1_03.txt AC 60 ms 64856 KB
sub1_04.txt AC 55 ms 64808 KB
sub1_05.txt AC 60 ms 64972 KB
sub1_06.txt AC 60 ms 64864 KB
sub1_07.txt AC 58 ms 65120 KB
sub1_08.txt AC 58 ms 64812 KB
sub1_09.txt AC 57 ms 65076 KB
sub1_10.txt AC 60 ms 65056 KB
sub1_11.txt WA 250 ms 72176 KB
sub1_12.txt WA 408 ms 76460 KB
sub1_13.txt WA 555 ms 80032 KB
sub1_14.txt WA 380 ms 70660 KB
sub1_15.txt WA 158 ms 69564 KB
sub1_16.txt WA 362 ms 74384 KB
sub1_17.txt WA 245 ms 70056 KB
sub1_18.txt AC 340 ms 69624 KB
sub1_19.txt AC 174 ms 75900 KB
sub1_20.txt AC 304 ms 94604 KB
sub1_21.txt WA 265 ms 69528 KB