Submission #19514709


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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:
        P[(0,1)]+=1
        continue
    elif b==0:
        M[(0,1)]+=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=(ans+c)%mod
else: ans=(ans-1)%mod
print(ans)

Submission Info

Submission Time
Task E - ∙ (Bullet)
User bis
Language PyPy3 (7.3.0)
Score 0
Code Size 925 Byte
Status WA
Exec Time 532 ms
Memory 121232 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 76 ms 65396 KB
sample_02.txt AC 54 ms 65492 KB
sub1_01.txt AC 514 ms 121232 KB
sub1_02.txt WA 59 ms 65456 KB
sub1_03.txt AC 54 ms 65428 KB
sub1_04.txt AC 58 ms 65284 KB
sub1_05.txt AC 56 ms 65548 KB
sub1_06.txt AC 54 ms 65576 KB
sub1_07.txt AC 52 ms 65224 KB
sub1_08.txt AC 55 ms 65560 KB
sub1_09.txt AC 59 ms 65396 KB
sub1_10.txt AC 55 ms 65144 KB
sub1_11.txt WA 246 ms 72196 KB
sub1_12.txt WA 409 ms 76856 KB
sub1_13.txt WA 532 ms 80580 KB
sub1_14.txt WA 363 ms 71204 KB
sub1_15.txt WA 157 ms 70072 KB
sub1_16.txt WA 351 ms 74488 KB
sub1_17.txt WA 244 ms 70544 KB
sub1_18.txt AC 338 ms 70228 KB
sub1_19.txt AC 165 ms 76464 KB
sub1_20.txt AC 299 ms 95060 KB
sub1_21.txt WA 257 ms 69928 KB