Buggy python submission (verdict: Time Limit Exceeded):
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = Decimal(input())
    d *= 10**9
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in r.keys():
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(x,y)]*r[(i,j)]
            if x == i and y == j:
                ans -= r[(x,y)]
                
print(ans//2)

Fixed submission:
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = int(float(input())*10**9 + 0.1)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in r.keys():
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(x,y)]*r[(i,j)]
            if x == i and y == j:
                ans -= r[(x,y)]
                
print(ans//2)

Buggy python submission (verdict: Time Limit Exceeded):
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = Decimal(input())
    d *= 10**9
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in a:
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(i,j)]
            if x == i and y == j:
                ans -= 1
                
print(ans//2)

Fixed submission:
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = int(float(input())*10**9 + 0.1)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in r.keys():
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(x,y)]*r[(i,j)]
            if x == i and y == j:
                ans -= r[(x,y)]
                
print(ans//2)

Buggy python submission (verdict: Runtime Error):
from decimal import Decimal
n = int(input())
a = []
r = [[0 for i in range(18)] for j in range(18)]
for i in range(n):
    d = Decimal(input())
    d *= 10**9
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[d2][d5] += 1
ans = 0

for x , y in a:
    for i in range(18):
        for j in range(18):
            if min(i+x,j+y) >= 18:
                ans += r[i][j]
    if min(x,y) >= 9:
        ans -= 1
print(ans//2)

Fixed submission:
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = int(float(input())*10**9 + 0.1)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in r.keys():
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(x,y)]*r[(i,j)]
            if x == i and y == j:
                ans -= r[(x,y)]
                
print(ans//2)

Buggy python submission (verdict: Runtime Error):
from decimal import Decimal
n = int(input())
a = []
r = [[0 for i in range(14)] for j in range(14)]
for i in range(n):
    d = Decimal(input())
    d *= 10**9
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[d2][d5] += 1
ans = 0

for x , y in a:
    for i in range(14):
        for j in range(14):
            if min(i+x,j+y) >= 18:
                ans += r[i][j]
    if min(x,y) >= 9:
        ans -= 1
print(ans//2)

Fixed submission:
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = int(float(input())*10**9 + 0.1)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in r.keys():
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(x,y)]*r[(i,j)]
            if x == i and y == j:
                ans -= r[(x,y)]
                
print(ans//2)

Buggy python submission (verdict: Runtime Error):
from decimal import Decimal
n = int(input())
a = []
r = [[0 for i in range(14)] for j in range(14)]
for i in range(n):
    d = Decimal(input())
    d *= 10**9
    d = int(d)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[d2][d5] += 1
ans = 0

for x , y in a:
    for i in range(14):
        for j in range(14):
            if min(i+x,j+y) >= 18:
                ans += r[i][j]
    if min(x,y) >= 9:
        ans -= 1
print(ans//2)

Fixed submission:
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = int(float(input())*10**9 + 0.1)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in r.keys():
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(x,y)]*r[(i,j)]
            if x == i and y == j:
                ans -= r[(x,y)]
                
print(ans//2)

Buggy python submission (verdict: Runtime Error):
from decimal import Decimal
n = int(input())
a = []
r = [[0 for i in range(14)] for j in range(14)]
for i in range(n):
    d = Decimal(input())
    d *= 10**9
    d = int(d)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[d2][d5] += 1
ans = 0

for x , y in a:
    for i in range(14):
        for j in range(14):
            if min(i+x,j+y) >= 18:
                ans += r[i][j]
    if min(x,y) >= 9:
        ans -= 1
print(ans//2)

Fixed submission:
from decimal import Decimal
n = int(input())
a = []
r = {}
for i in range(n):
    d = int(float(input())*10**9 + 0.1)
    d2 = 0
    d5 = 0
    while True:
        if d % 2 != 0 and d % 5 != 0:
            break
        if d % 2 == 0:
            d //= 2
            d2 += 1
        if d % 5 == 0:
            d //= 5
            d5 += 1
    a.append((d2,d5))
    r[(d2,d5)] = r.get((d2,d5),0) + 1
ans = 0
for x , y in r.keys():
    for i , j in r.keys():
        if min(x+i,y+j) >= 18:
            ans += r[(x,y)]*r[(i,j)]
            if x == i and y == j:
                ans -= r[(x,y)]
                
print(ans//2)