Problem p02679 (python)

Fixed submission:
from math import gcd 
from collections import defaultdict

def to_irreducible(a, b):
    if a == 0:
        return [0, 1]
    GCD = gcd(a, b)
    return [a//GCD, b//GCD]

MOD = 10**9 + 7
N = int(input())
daiichi_dict = defaultdict(int)
daini_dict = defaultdict(int)
zero_cases = 0

for i in range(N):
    a, b = map(int, input().split())
    if a == 0 and b == 0:
        zero_cases += 1
    elif a * b >=0 and b != 0:
        a, b = to_irreducible(abs(a), abs(b))
        daiichi_dict[(a,b)] += 1
    else:
        a, b = to_irreducible(abs(b), abs(a))
        daini_dict[(a,b)] += 1
        daiichi_dict[(a,b)] += 0


ans = 1 
for key, value_daiichi in daiichi_dict.items():
    value_daini = daini_dict[key]
    ans *= (2**value_daiichi + 2**value_daini -1)
    ans %= MOD
print((ans+zero_cases-1) % MOD)

Buggy submission (verdict: Runtime Error):
import math 

MOD = 10**9 + 7
N = int(input())
ABC = []
zero_cases = 0
for i in range(N):
    a, b = map(int, input().split())
    if a == 0 and b == 0:
        zero_cases = 1
    elif a * b >=0 and a != 0:
        ABC.append([ math.atan2(abs(b),abs(a)), abs(a), abs(b),1])
    else:
        ABC.append([math.atan2(abs(a),abs(b)), abs(b), abs(a), -1])
ABC.sort()
current_arg = ABC[-1][0]
group = []
daiich = 0
daini = 0
while ABC:
    current = ABC.pop()
    if current[0] == current_arg:
        if current[3]==1:
            daiich += 1
        else:
            daini += 1
    else:
        group += [[daiich, daini]]
        daiich = 0
        daini = 0
        if current[3]==1:
            daiich += 1
        else:
            daini += 1
        if ABC:
            current_arg = current[0]
else:
    group += [[daiich, daini]]
    daiich = 0
    daini = 0

ans = 1 + zero_cases
for u, v in group:
    ans *= (2**u + 2**v -1)
    ans %= MOD
print(ans-1)

Buggy submission (verdict: Runtime Error):
import math 

MOD = 10**9 + 7
N = int(input())
ABC = []
zero_cases = 1
for i in range(N):
    a, b = map(int, input().split())
    if a == 0 and b == 0:
        zero_cases = 2
    elif a * b >=0 and a != 0:
        ABC.append([ math.atan2(abs(b),abs(a)), abs(a), abs(b),1])
    else:
        ABC.append([math.atan2(abs(a),abs(b)), abs(b), abs(a), -1])
ABC.sort()
current_arg = ABC[-1][0]
current_x = ABC[-1][1]
current_y = ABC[-1][2]
group = []
daiich = 0
daini = 0
while ABC:
    current = ABC.pop()
    di = {}
    if current[0] == current_arg:
        if current[3]==1:
            daiich += 1
        else:
            daini += 1
    else:
        group += [[daiich, daini]]
        daiich = 0
        daini = 0
        if current[3]==1:
            daiich += 1
        else:
            daini += 1
        if ABC:
            current_arg = current[0]
            current_x = current[1]
            current_y = current[2]
else:
    group += [[daiich, daini]]
    daiich = 0
    daini = 0

ans = zero_cases
for u, v in group:
    ans *= (2**u + 2**v -1)
    ans %= MOD
print(ans-1)

Buggy submission (verdict: Runtime Error):
import math 

MOD = 10**9 + 7
N = int(input())
ABC = []
for i in range(N):
    a, b = map(int, input().split())
    if a == 0 and b == 0:
        print(0/0)
    if a * b >=0 and a != 0:
        ABC.append([ math.atan2(abs(b),abs(a)), abs(a), abs(b),1])
    else:
        ABC.append([math.atan2(abs(a),abs(b)), abs(b), abs(a), -1])
ABC.sort()
current_arg = ABC[-1][0]
current_x = ABC[-1][1]
current_y = ABC[-1][2]
group = []
daiich = 0
daini = 0
while ABC:
    current = ABC.pop()
    di = {}
    if current[0] == current_arg:
        if current[3]==1:
            daiich += 1
        else:
            daini += 1
    else:
        group += [[daiich, daini]]
        daiich = 0
        daini = 0
        if current[3]==1:
            daiich += 1
        else:
            daini += 1
        if ABC:
            current_arg = current[0]
            current_x = current[1]
            current_y = current[2]
else:
    group += [[daiich, daini]]
    daiich = 0
    daini = 0

ans = 1
for u, v in group:
    ans *= (2**u + 2**v -1)
    ans %= MOD
print(ans-1)