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

mod=10**9+7
sum=0
for i in range(N-1):
    for j in range(i+1,N):
       sum+=((A[i])*(A[j]))%mod
else:
    sum=sum%mod

print(sum)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum=0
for i in range(N-1):
    for j in range(i+1,N):
       sum+=(A[i]%mod)*(A[j]%mod)
else:
    sum=sum%mod

print(sum)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum_all=[]
for i in range(N-1):
    for j in range(i+1,N):
        sum_all.append((A[i]%mod)*(A[j]%mod))

answer=sum(sum_all)%mod
print(answer)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum_all=[]
for i in range(N-1):
    for j in range(i+1,N):
        A[i]=A[i]%mod
        A[j]=A[j]%mod
        sum_all.append((A[i])*(A[j]))

sum=0
for n in sum_all:
    sum+=n
print(sum%mod)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

Buggy python submission (verdict: Runtime Error):
sum_all=[]
for i in range(N-1):
    for j in range(i+1,N):
        A[i]=A[i]%mod
        A[j]=A[j]%mod
        sum_all.append((A[i])*(A[j]))

sum=0
for n in sum_all:
    sum+=n
print(sum%mod)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum_all=[]
for i in range(N-1):
    for j in range(i+1,N):
        A[i]=A[i]%mod
        A[j]=A[j]%mod
        sum_all.append((A[i])*(A[j]))

sum=0
for n in sum_all:
    sum+=n%mod
print(sum%mod)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum=0
for i in range(N-1):
    for j in range(i+1,N):
        A[i]=A[i]%mod
        A[j]=A[j]%mod
        sum+=((A[i])*(A[j] ))
        sum=sum%mod
print(sum)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum=0
for i in range(N-1):
    for j in range(i+1,N):
        A[i]=A[i]%mod
        A[j]=A[j]%mod
        sum+=((A[i])*(A[j] ))
print(sum%mod)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum=0
for i in range(N-1):
    for j in range(i+1,N):
        sum+=((A[i])*(A[j] ))
        sum=sum%mod
print(sum)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))

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

mod=10**9+7
sum=0
for i in range(N-1):
    for j in range(i+1,N):
        sum+=((A[i] % mod)*(A[j] % mod))%mod
        sum=sum%mod
print(sum)

Fixed submission:
N=int(input())
A=list(map(int,input().split()))

mod=10**9+7

B=[0]
for i in range(1,N+1):
    B.append(A[i-1]+B[i-1])

ans=0
for i in range(N-1):
    ans+=A[i]*(B[N]-B[i+1])
    ans%=mod

print(int(ans))