Buggy python submission (verdict: Time Limit Exceeded):
import sys
readline = sys.stdin.readline

N = int(readline())
A = list(map(int,readline().split()))
DIV = 10 ** 9 + 7

# 各桁の1と0の数を数えて、((1の数) * (0の数)) * (2 ** i桁目(1桁目を0とする))を数える

K = max(A)
for i in range(len(A)):
  A[i] = bin(A[i])[2:][::-1]
  
j = 0
ans = 0
while K:
  one = 0
  for i in range(len(A)):
    if len(A[i]) > j:
      if A[i][j] == "1":
        one += 1
  ans += (one % DIV) * ((N - one) % DIV) * pow(2,j,DIV)
  ans %= DIV
  j += 1
  K >>= 1
  
print(ans)

Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
readline = sys.stdin.readline

N = int(readline())
A = list(map(int,readline().split()))
DIV = 10 ** 9 + 7

# 各桁の1と0の数を数えて、((1の数) * (0の数)) * (2 ** i桁目(1桁目を0とする))を数える

K = max(A) # 最も大きい数が0になるまでループ
ans = 0
j = 0
while K:
  one = 0
  for i in range(len(A)):
    if (A[i] >> j) & 1:
      one += 1
  ans += (one % DIV) * ((N - one) % DIV) * pow(2,j,DIV)
  ans %= DIV
  j += 1
  K >>= 1
  
print(ans)

Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
readline = sys.stdin.readline

N = int(readline())
A = list(map(int,readline().split()))
DIV = 10 ** 9 + 7

# 各桁の1と0の数を数えて、((1の数) * (0の数)) * (2 ** i桁目(1桁目を0とする))を数える

K = max(A) # 最も大きい数が0になるまでループ
rate = 1
ans = 0
j = 0
while K:
  one = 0
  zero = 0
  for i in range(len(A)):
    if (A[i] >> j) & 1:
      one += 1
    else:
      zero += 1
  ans += (one % DIV) * (zero % DIV) * rate
  ans %= DIV
  rate *= 2
  rate %= DIV
  j += 1
  K >>= 1
  
print(ans)

Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
readline = sys.stdin.readline

N = int(readline())
A = list(map(int,readline().split()))
DIV = 10 ** 9 + 7

# 各桁の1と0の数を数えて、((1の数) * (0の数)) * (2 ** i桁目(1桁目を0とする))を数える

K = max(A) # 最も大きい数が0になるまでループ
rate = 1
ans = 0
j = 0
while K:
  one = 0
  zero = 0
  for i in range(len(A)):
    if (A[i] >> j) & 1:
      one += 1
    else:
      zero += 1
  ans += one * zero * rate
  ans %= DIV
  rate *= 2
  j += 1
  K >>= 1
  
print(ans)

Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
readline = sys.stdin.readline

N = int(readline())
A = list(map(int,readline().split()))
DIV = 10 ** 9 + 7

# 各桁の1と0の数を数えて、((1の数) * (0の数)) * (2 ** i桁目(1桁目を0とする))を数える

K = max(A) # 最も大きい数が0になるまでループ
rate = 1
ans = 0
while K:
  one = 0
  zero = 0
  for i in range(len(A)):
    if A[i] & 1:
      one += 1
    else:
      zero += 1
    A[i] >>= 1
  ans += one * zero * rate
  ans %= DIV
  rate *= 2
  K >>= 1
  
print(ans)

Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=int(input())
A=list(map(int,input().split()))
  
keta=[0]*60
for i in range(n):
  tar=A[i]
  ind=0
  while tar>0:
    if tar&1==1:
      keta[ind]+=1
    tar>>=1
    ind+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)


Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)

Buggy python submission (verdict: Runtime Error):
n=int(input())
a=list(map(int,input()))
DIV=10**9+7
ans=0
if n%2==0:
  ans=a[0]
  for i in range(1,len(a)):
    ans+=ans^a[i]
    ans%=DIV
else:
  ans=a[0]^a[0]
  for i in range(1,len(a)):
    ans+=ans^(a[i]^a[i])
    ans%=DIV
print(ans)
              

Fixed submission:
n=int(input())
A=list(map(int,input().split()))
binA=[None]*n
for i in range(n):
  binA[i]=bin(A[i])[2:]
  
keta=[0]*60
for i in range(n):
  tar=binA[i]
  for j in range(len(tar)-1,-1,-1):
    if tar[j]=="1":
      keta[len(tar)-1-j]+=1

pair=[0]*60
for i in range(len(keta)):
  pair[i]=keta[i]*(len(A)-keta[i])
  
ans=0
mul=1
DIV=10**9+7
for i in range(len(pair)):
  ans+=pair[i]*mul
  ans%=DIV
  mul*=2
print(ans)