Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))

M = 61
D1 = [0] * M

for a in A:
    k = 0
    while a > 0:
        if a & 1:
            D1[k] += 1
        a >>= 1
        k += 1

MOD = 10 ** 9 + 7
ans = 0
for k in range(M):
    d = D1[k]
    ans += d * (N - d) * pow(2, k, MOD)
    ans %= MOD

print(ans)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())

A = map(int, input().split())

ones = [0] * 60
m = 10 ** 9 + 7

for Ai in A:
    for digit in range(len(bin(Ai)) - 2):
        ones[digit] += ((Ai >> digit) & 1)

res = 0
for i, num in enumerate(ones):
    res += (1 << i) * num * (N - num)

print(res % m)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())

A = map(int, input().split())

ones = [0] * 60
m = 10 ** 9 + 7

for Ai in A:
    for digit in range(len(bin(Ai)) - 2):
        ones[digit] += ((Ai >> digit) & 1)

res = 0
for i, num in enumerate(ones):
    res = (res + (1 << i) * num * (N - num)) % m

print(res)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Runtime Error):
N = int(input())

A = map(int, input().split())

ones = [0] * 60
m = 10 ** 9 + 7

for Ai in A:
    for digit in range(len(bin(Ai) - 2)):
        ones[digit] += ((Ai >> digit) & 1)

res = 0
for i, num in enumerate(ones):
    res = (res + (1 << i) * num * (N - num)) % m

print(res)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Runtime Error):
N = int(input())

A = map(int, input().split())

ones = [0] * 60
m = 10 ** 9 + 7

for Ai in A:
    for digit in len(bin(Ai) - 2):
        ones[digit] += ((Ai >> digit) & 1)

res = 0
for i, num in enumerate(ones):
    res = (res + (1 << i) * num * (N - num)) % m

print(res)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())

A = map(int, input().split())

ones = [0] * 60
m = 10 ** 9 + 7

for Ai in A:
    for digit in range(60):
        ones[digit] += ((Ai >> digit) & 1)

res = 0
for i, num in enumerate(ones):
    res = (res + (1 << i) * num * (N - num)) % m

print(res)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import combinations
N = int(input())

numbers = map(int, input().split())

res = 0
for pair in combinations(numbers, 2):
    res += pair[0] ^ pair[1]

p = 10 ** 9 + 7
print(res % p)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import combinations
N = int(input())

numbers = map(int, input().split())

res = 0
for pair in combinations(numbers, 2):
    res += pair[0] ^ pair[1]

p = 10 ** 9 + 7
print(res % p)


Fixed submission:
N = int(input())

A = map(int, input().split())

num = [[0, 0] for _ in range(60)]

for Ai in A:
    for digit in range(60):
        if (Ai >> digit) & 1:
            num[digit][1] += 1
        else:
            num[digit][0] += 1

res = 0
for i, p in enumerate(num):
    res += (1 << i) * p[0] * p[1]

m = 10 ** 9 + 7
print(res % m)