Buggy python submission (verdict: Time Limit Exceeded):
n=input()
m=0
MOD = 10 ** 9 + 7
from itertools import combinations
b=combinations
a=b(map(int,input().split()),2)
for i,j in a:
    k=i*j
    m+=k%MOD
    m%=MOD
print(m)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
m=0
MOD = 10 ** 9 + 7
from itertools import combinations
b=combinations
a=b(map(int,input().split()),2)
for i,j in a:
    k=i*j
    m+=k
    m%=MOD
print(m)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
m=0
from itertools import combinations
b=combinations
a=b(map(int,input().split()),2)
for i,j in a:
    k=i*j
    m+=k
MOD = 10 ** 9 + 7
v=m%MOD
print(v)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Runtime Error):
n=input()
m=0
from itertools import combinations
b=combinations
a=b(map(int,input().split()),2)
for i,j in a:
    k=i*j
    m+=k
if m<=MOD:
    print(m)
else:
	MOD=10**9+7
    v=m%MOD
    print(v)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
m=0
MOD = 10**9 + 7
from itertools import combinations
a=combinations(map(int,input().split()),2)
for i,j in a:
    k=i*j
    m+=k
if m<=MOD:
    print(m)
else:
    v=m%MOD
    print(v)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
m=0
MOD = 10**9 + 7
from itertools import combinations
for i,j in combinations(map(int,input().split()),2):
    k=i*j
    m+=k
v=m%MOD
if m<=MOD:
    print(m)
else:
    print(v)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
m=0
from itertools import combinations
for i,j in combinations(map(int,input().split()),2):
    k=i*j
    m+=k
v=m%1000000007
if m<=1000000007:
    print(m)
else:
    print(v)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
a=map(int,input().split())
m=0
from itertools import combinations
for i,j in combinations(a,2):
    k=i*j
    m+=k
v=m%1000000007
if m<=1000000007:
    print(m)
else:
    print(v)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
a=map(int,input().split())
m=0
from itertools import*
for i,j in combinations(a,2):
    k=i*j
    m+=k
if m<=1000000007:
    print(m)
else:
    print(m%1000000007)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=input()
a=map(int,input().split())
m=0
from itertools import*
for i,j in combinations(a,2):
    k=i*j
    m+=k
if m<=1000000007:
    print(m)
else:
    print(m%1000000007)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
n=int(input())
a=map(int,input().split())
m=0
from itertools import*
for i,j in combinations(a,2):
    k=i*j
    m+=k
print(m%1000000007)

Fixed submission:
N=int(input())
A=list(map(int, input().split()))
MOD = 10 ** 9 + 7

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

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

print(ans)