Submission #19514368


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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=1
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
if c: ans+=my_pow(c)
ans=(ans-1)%mod
print(ans)

Submission Info

Submission Time
Task E - ∙ (Bullet)
User bis
Language PyPy3 (7.3.0)
Score 0
Code Size 1040 Byte
Status WA
Exec Time 548 ms
Memory 121012 KB

Judge Result

Set Name Sample Subtask1
Score / Max Score 0 / 0 0 / 500
Status
AC × 2
AC × 14
WA × 9
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 69 ms 65196 KB
sample_02.txt AC 57 ms 65644 KB
sub1_01.txt AC 527 ms 121012 KB
sub1_02.txt WA 58 ms 65440 KB
sub1_03.txt AC 58 ms 65512 KB
sub1_04.txt AC 57 ms 65332 KB
sub1_05.txt AC 57 ms 65416 KB
sub1_06.txt AC 59 ms 65384 KB
sub1_07.txt AC 56 ms 65384 KB
sub1_08.txt AC 58 ms 65432 KB
sub1_09.txt AC 58 ms 65504 KB
sub1_10.txt AC 57 ms 65512 KB
sub1_11.txt WA 245 ms 72440 KB
sub1_12.txt WA 402 ms 76608 KB
sub1_13.txt WA 548 ms 80544 KB
sub1_14.txt WA 364 ms 71216 KB
sub1_15.txt WA 159 ms 69976 KB
sub1_16.txt WA 353 ms 74828 KB
sub1_17.txt WA 241 ms 70464 KB
sub1_18.txt AC 335 ms 70140 KB
sub1_19.txt AC 165 ms 76192 KB
sub1_20.txt AC 299 ms 95000 KB
sub1_21.txt WA 258 ms 69728 KB