Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Time Limit Exceeded):
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0

for i in range(1,N):
    tmp = A[i:]
#    print(tmp)
    ans += A[i-1]*sum(tmp)
print(ans%mod)


Fixed submission:
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0
v = sum(A)
for i in range(N-1):
    v -= A[i]
    ans += A[i]*v
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0

for i in range(2**len(A)):  # 空集合を除く場合はrange(1, 2**len(list1))
    list2 = []
    for j in range(len(A)):
        if (i >> j) &1 == 1:
            list2.append(A[j])
    if len(list2) == 2:
        ans += list2[0]*list2[1]
#        print(ans)
#    print(list2)
    ans = ans%mod
print(ans)


Fixed submission:
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0
v = sum(A)
for i in range(N-1):
    v -= A[i]
    ans += A[i]*v
print(ans%mod)

Buggy python submission (verdict: Runtime Error):
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0

for i in range(2**len(A)):\
    list2 = []
    for j in range(len(A)):
        if (i >> j) &1 == 1:
            list2.append(A[j])
    if len(list2) == 2:
        ans += list2[0]*list2[1]
#        print(ans)
#    print(list2)
    ans = ans%mod
print(ans)


Fixed submission:
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0
v = sum(A)
for i in range(N-1):
    v -= A[i]
    ans += A[i]*v
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
b = 10**9+7
ans = 0
for i in range(N-1):
    tmp = A[i+1:]
#    print(tmp)
    ans += A[i]*sum(tmp)
print(ans%b)


Fixed submission:
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0
v = sum(A)
for i in range(N-1):
    v -= A[i]
    ans += A[i]*v
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):
import itertools

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

ans = 0
a = list(itertools.combinations(A,2))
#print(a)
#print(a[1])
for i in range(len(a)):
    tmp = a[i]
    #print(tmp)
    ans += tmp[0]*tmp[1]

print(ans%(10**9+7))


Fixed submission:
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0
v = sum(A)
for i in range(N-1):
    v -= A[i]
    ans += A[i]*v
print(ans%mod)

Buggy python submission (verdict: Time Limit Exceeded):


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

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


Fixed submission:
import functools
import operator

N = int(input())
A = list(map(int, input().split()))
mod = 10**9+7
ans = 0
v = sum(A)
for i in range(N-1):
    v -= A[i]
    ans += A[i]*v
print(ans%mod)
Buggy python submission (verdict: Runtime Error):

N = int(input())
for i in range(1,N):
    if i*1000>=N:
        ans = i*1000-N
        break
print(ans)



Fixed submission:

N = int(input())
ans = 0
for i in range(0,N):
    if i*1000>=N:
        ans = i*1000-N
        break
    if N < 1000:
        ans = 1000 - N
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):

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

tmp = 1
for i in range(n):
    tmp *= A[i] 
if tmp > 10**18:
        tmp = -1
        print(tmp)
        exit()
else:
    print(tmp)




Fixed submission:

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

tmp = 1
A.sort()
#print(A)
if A[0] == 0:
    print(0)
    exit()
for i in range(n):
    tmp *= A[i] 
    if tmp > 10**18:
            tmp = -1
            print(tmp)
            exit()
print(tmp)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))
A.insert(0, 0)
for i in range(N):
    tmp = 0
    for j in range(i+1, N):
        if(i+1 == A[j]):
            tmp += 1
        else:
            pass
    print(tmp)

Fixed submission:

N = int(input())
A = list(map(int, input().split()))
dp = [0]*N
for i in range(len(A)):
    dp[A[i]-1] += 1
for i in range(N):
    print(dp[i])

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))
A.insert(0, 0)
for i in range(N-1):
    tmp = 0
    for j in range(i+1, N):
        if(i+1 == A[j]):
            tmp += 1
    print(tmp)
print(0)

Fixed submission:

N = int(input())
A = list(map(int, input().split()))
dp = [0]*N
for i in range(len(A)):
    dp[A[i]-1] += 1
for i in range(N):
    print(dp[i])

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int, input().split()))
A.insert(0, 0)
for i in range(N):
    tmp = 0
    for j in range(i+1, N):
        if(i+1 == A[j]):
            tmp += 1
    print(tmp)

Fixed submission:

N = int(input())
A = list(map(int, input().split()))
dp = [0]*N
for i in range(len(A)):
    dp[A[i]-1] += 1
for i in range(N):
    print(dp[i])
Buggy python submission (verdict: Time Limit Exceeded):
import math

K = int(input())
ans = 0
for a in range(1,K+1):
    for b in range(1,K+1):
        for c in range(1,K+1):
            ans += math.gcd(a, math.gcd(b,c))
print(ans)


Fixed submission:
import math
K = int(input())
count = 0
for i in range(1, K+1):
    for j in range(1, K+1):
        tmp = math.gcd(i, j)
        for k in range(1, K+1):
            count += math.gcd(tmp, k)
print(count)

Buggy python submission (verdict: Time Limit Exceeded):
import math
K = int(input())
count = 0
for i in range(1, K+1):
    for j in range(1, K+1):
        for k in range(1, K+1):
            tmp = 0
            tmp = math.gcd(i, j)
            count += math.gcd(tmp, k)
print(count)

Fixed submission:
import math
K = int(input())
count = 0
for i in range(1, K+1):
    for j in range(1, K+1):
        tmp = math.gcd(i, j)
        for k in range(1, K+1):
            count += math.gcd(tmp, k)
print(count)

Buggy python submission (verdict: Time Limit Exceeded):
import math
K = int(input())
count = 0
for i in range(1, K+1):
    for j in range(1, K+1):
        for k in range(1, K+1):
            tmp = 0
            tmp = math.gcd(i, j)
            count += math.gcd(tmp, k)
print(count)

Fixed submission:
import math
K = int(input())
count = 0
for i in range(1, K+1):
    for j in range(1, K+1):
        tmp = math.gcd(i, j)
        for k in range(1, K+1):
            count += math.gcd(tmp, k)
print(count)
Buggy python submission (verdict: Time Limit Exceeded):


K,N = list(map(int,input().split()))
A = list(map(int,input().split()))
A.append(K)
B = []
for i in range(N):
    B.append(abs(A[i]-A[i+1]))
#print(B)
ans = K
for i in range(N):
    ans = min(ans,sum(B)-B[i])
print(ans)


Fixed submission:


K,N = list(map(int,input().split()))
A = list(map(int,input().split()))
B = []
for i in range(N-1):
    B.append(abs(A[i+1]-A[i]))
B.append(K+A[0]-A[-1])
#print(B)
print(K-max(B))
Buggy python submission (verdict: Runtime Error):

s = input()
n = len(s)
s1 = s[:int((n-1)/2)]
s2 = s[int((n+3)/2)-1:]

i = 1
while i < len(s1):
    if not s1[i-1] == s1[-i]:
        print("No")
        break
    i += 1
while i < len(s2):
    if not s2[i+2] == s2[-i]:
        print("No")
    i += 1
print("Yes")





Fixed submission:

s = str(input())
n = len(s)
s1 = s[:int((n-1)/2)]
s2 = s[int((n+3)/2)-1:]

if s == s[::-1] and s1 == s1[::-1] and s2 == s2[::-1]:
    print("Yes")
else:
    print("No")
Buggy python submission (verdict: Time Limit Exceeded):

N, A, B = list(map(int, input().split()))
i = 0
b = 0
r = 0
while i < N:
    if (i+A <= N):
        b += A
        i += A
    elif(i+A > N):
        b += N-i
        break
    if (i+B <= N):
        r += B
        i += B
    elif(i+B > N):
        r += N-i
        break        
print(b)


Fixed submission:

N, A, B = list(map(int, input().split()))
i = 0
b = 0
r = 0

c = N//(A+B)
#print(c)
d = N%(A+B)
#print(d)
if d <= A:
    b = c*A + d
else:
    b = (c+1)*A
print(b)
Buggy python submission (verdict: Runtime Error):
N, R = int(input())

if N >= 10:
    print(R)
else:
    print(R + 100*(10-N))


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

if N >= 10:
    print(R)
else:
    print(R + 100*(10-N))
Buggy python submission (verdict: Runtime Error):
r = int(input)
print(r**2)

Fixed submission:
r = int(input())
print(r**2)
Buggy python submission (verdict: Runtime Error):

n,k = list(map(int, input().split()))
h = list(map(int, input().split()))

cnt = 0
for i in range(k):
    if h[i] >= k:
        cnt += 1
print(cnt)



Fixed submission:

n,k = list(map(int, input().split()))
h = list(map(int, input().split()))

cnt = 0
for i in range(n):
    if h[i] >= k:
        cnt += 1
print(cnt)
Buggy python submission (verdict: Time Limit Exceeded):

def solve():
    ans = "Yes"
    for i in range(1,N):
        tmp = min(H[i:])
        if H[i-1] - tmp > 1:
            ans = "No" 
            break
    print(ans)

if __name__ == "__main__":
    N = int(input())
    H = list(map(int, input().split()))  
    solve()


Fixed submission:

def solve():
    ans = "Yes"
    for i in range(1,N-1):
        if H[i] > H[i+1]:
            H[i] -= 1
            if H[i] > H[i+1]:
                ans = "No"
                break
            if H[i-1] > H[i]:
                ans = "No"
                break
        elif H[i-1] <= H[i]-1:
            H[i] -= 1
    print(ans)

if __name__ == "__main__":
    N = int(input())
    H = list(map(int, input().split()))  
    solve()
Buggy python submission (verdict: Time Limit Exceeded):

def solve():
#    dp = [1]*(N)
    dp = [0] * N
    for i in range(M):
#        for j in range(0, LR[i][0]-1):
#            dp[j] = 0
#        for j in range(LR[i][1], N):
#            dp[j] = 0
        for j in range(LR[i][0]-1,LR[i][1]):
            dp[j] += 1
#    print(dp)
    print(dp.count(M))
#    print(sum(dp))


if __name__ == "__main__":
    N,M = list(map(int, input().split()))
    LR = [list(map(int, input().split())) for _ in range(M)]
    solve()  


Fixed submission:

def solve():
    dp = [0] * N
    L = max(l)
    R = min(r)
    if L <= R:
        i = list(range(L,R+1))
        ans = len(i)
    else:
        ans = 0
    print(ans)

if __name__ == "__main__":
    N,M = list(map(int, input().split()))
#    LR = [list(map(int, input().split())) for _ in range(M)]
    l,r = [0]*M, [0]*M
    for c in range(M):
        tmp = list(map(int, input().split()))
        l[c] = tmp[0]
        r[c] = tmp[1]
    solve()

Buggy python submission (verdict: Time Limit Exceeded):

def solve():
#    num = list(range(N+1))
#    l = [0]*M
    dp = [1]*(N)
    for i in range(M):
#        dp = [dp[j] for j in range(0,LR[i][0])]
#        dp = [dp[j] for j in range(LR[i][1], M)]
        for j in range(0, LR[i][0]-1):
            dp[j] = 0
        for j in range(LR[i][1], N):
            dp[j] = 0
#    print(dp)
    print(sum(dp))


if __name__ == "__main__":
    N,M = list(map(int, input().split()))
    LR = [list(map(int, input().split())) for _ in range(M)]
    solve()  


Fixed submission:

def solve():
    dp = [0] * N
    L = max(l)
    R = min(r)
    if L <= R:
        i = list(range(L,R+1))
        ans = len(i)
    else:
        ans = 0
    print(ans)

if __name__ == "__main__":
    N,M = list(map(int, input().split()))
#    LR = [list(map(int, input().split())) for _ in range(M)]
    l,r = [0]*M, [0]*M
    for c in range(M):
        tmp = list(map(int, input().split()))
        l[c] = tmp[0]
        r[c] = tmp[1]
    solve()
Buggy python submission (verdict: Time Limit Exceeded):

def solve():
    for i in range(Q):
        cnt = S[lr[i][0]-1:lr[i][1]].count("AC")
#        print(S[lr[i][0]-1:lr[i][1]])
        print(cnt)

if __name__ == "__main__":
    N,Q = list(map(int, input().split()))  
    S = input()
    lr = [list(map(int, input().split())) for _ in range(Q)]
    solve()


Fixed submission:

def solve():
    t = [0] * (N+1)
    for i in range(N):
        if S[i:i+2] == "AC":
            t[i+1] = t[i] + 1
        else:
            t[i+1] = t[i]
    for j in range(Q):
        print(t[lr[j][1]-1]-t[lr[j][0]-1])

if __name__ == "__main__":
    N,Q = list(map(int, input().split()))  
    S = input()
    lr = [list(map(int, input().split())) for _ in range(Q)]
    solve()
Buggy python submission (verdict: Runtime Error):


N,M = list(map(int, input().split()))
X = list(map(int, input().split()))

X.sort()
cnt = 0
arr = [0]*(M-1)
if N > M:
    ans = 0
else:
    for i in range(1,M):
        arr[i] = (abs(X[i-1]-X[i]))
    #print(arr)
    arr.sort()
    ans = sum(arr[0:M-N])
print(ans)

Fixed submission:

def solve():
    if N >= M:
        return 0
    elif N == 1:
        cnt = abs(X[-1] - X[0])
        return cnt
    L = [0] * (M-1)
    
    for i in range(len(L)):
        L[i] = X[i+1] - X[i]
    L.sort()
    return sum(L[:M-N])



if __name__=="__main__":
    N,M = list(map(int, input().split()))
    X = list(map(int, input().split()))
    X.sort()
    print(solve())
Buggy python submission (verdict: Time Limit Exceeded):

def solve():
    Height = 10**9
    for i in range(0,N-K+1):
        hmax = max(h[i:i+K])
        hmin = min(h[i:i+K])
        Height = min(Height, hmax-hmin)
#        print(h[i:i+K])
#        print(Height)
    print(Height)

if __name__=="__main__":
    N,K = list(map(int, input().split()))
    h = [int(input()) for _ in range(N)]
    h.sort()
    solve()


Fixed submission:

def solve():
    Height = 10**9
    for i in range(0,N-K+1):
        hmax = h[i+K-1]
        hmin = h[i]
        Height = min(Height, hmax-hmin)
#        print(h[i:i+K])
#        print(Height)

    print(Height)

if __name__=="__main__":
    N,K = list(map(int, input().split()))
    h = [int(input()) for _ in range(N)]
    h.sort()
    solve()
Buggy python submission (verdict: Runtime Error):

def solve():
    d = 0
    c = 0
    for i in range(D):
        d += p[i][0]
    dp = [[0]*(d+1) for i in range(D)]
    for i in range(D):
        for j in range(p[i][0]+1):
            if i == 0:
                if j == p[i][0]:
                    dp[i][j] += p[i][1]
                dp[i][j] += 100*j
            else:
                for k in range(c+1):
                    if j == p[i][0]:
                        dp[i][k+j]=max(dp[i][k+j],dp[i-1][k]+100*j*(i+1)+p[i][1])
                    else:
                        dp[i][k+j]=max(dp[i][k+j],dp[i-1][k]+100*j*(i+1))
        c += p[i][0]
    for i in range(d+1):
        if dp[D-1][i]>=G:
            print(i)
            break    
    
if __name__=="__main__":
    D,G = list(map(int, input().split()))
    pc = [list(map(int, input().split())) for _ in range(D)]
    solve()


Fixed submission:

def solve():
    d = 0
    c = 0
    for i in range(D):
        d += p[i][0]
    dp = [[0]*(d+1) for i in range(D)]
    for i in range(D):
        for j in range(p[i][0]+1):
            if i == 0:
                if j == p[i][0]:
                    dp[i][j] += p[i][1]
                dp[i][j] += 100*j
            else:
                for k in range(c+1):
                    if j == p[i][0]:
                        dp[i][k+j]=max(dp[i][k+j],dp[i-1][k]+100*j*(i+1)+p[i][1])
                    else:
                        dp[i][k+j]=max(dp[i][k+j],dp[i-1][k]+100*j*(i+1))
        c += p[i][0]
    for i in range(d+1):
        if dp[D-1][i]>=G:
            print(i)
            break    
    
if __name__=="__main__":
    D,G = list(map(int, input().split()))
    p = [list(map(int, input().split())) for _ in range(D)]
    solve()
Buggy python submission (verdict: Runtime Error):
N = int(input())
d = [int(input()) for i in range(N)]count = 1
d.sort(reverse=True)
for j in range(N-1):
    if (d[j] != d[j+1]):
        count += 1
print(count)


Fixed submission:
N = int(input())
d = [int(input()) for i in range(N)]
print(len(set(d)))
Buggy python submission (verdict: Runtime Error):
input()
A = list(map(int, input().split()))
count = 0
while all(a % 2 == 0 for a in A):
    A = [a/2 for a in A]
    count += 1
print(count)

Fixed submission:
print(input().count("1"))

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = list(map(int, input().split()))
count = 0
while all(a % 2 == 0 for a in A):
    A = [a/2 for a in A]
    count +=1
print(count)


Fixed submission:
print(input().count("1"))
Buggy python submission (verdict: Time Limit Exceeded):

def solve():
    cnt = 0
    for x in range(K+1):
        for y in range(K+1):
            for z in range(K+1):
                if x+y+z == S:
                    cnt += 1
    print(cnt)


if __name__=="__main__":
    K, S = list(map(int, input().split()))
    solve()


Fixed submission:

def solve():
    cnt = 0
    for x in range(K+1):
        for y in range(K+1):
            z = S - (x+y)
            if 0 <= z and z <= K:
                cnt += 1

    print(cnt)


if __name__=="__main__":
    K, S = list(map(int, input().split()))
    solve()
Buggy python submission (verdict: Time Limit Exceeded):
N, K = map(int, input().split())
P = list(map(int, input().split()))
C = list(map(int, input().split()))

for i in range(N):
    P[i] -= 1

ans = -1 * 2 ** 30

if K <= N:
    for i in range(N):
        pos = i
        score = 0
        for j in range(K):
            score += C[pos]
            pos = P[pos]
            ans = max(ans, score)
    print(ans)
    exit(0)

for i in range(N):
    pos = i
    k = 0
    score = 0

    for j in range(N):
        score += C[pos]
        pos = P[pos]
        ans = max(ans, score)
        k += 1
        if pos == i:
            break

    score *= K // k
    ans = max(ans, score)
    for j in range(K % k):
        score += C[pos]
        pos = P[pos]
        ans = max(ans, score)
print(ans)

Fixed submission:
N, K = map(int, input().split())
P = list(map(int, input().split()))
C = list(map(int, input().split()))

for i in range(N):
    P[i] -= 1

ans = -1 * 2 ** 30

if K <= N:
    for i in range(N):
        pos = i
        score = 0
        for j in range(K):
            score += C[pos]
            pos = P[pos]
            ans = max(ans, score)
    print(ans)
    exit(0)

for i in range(N):
    pos = i
    k = 0
    score = 0

    for j in range(N):
        score += C[pos]
        pos = P[pos]
        ans = max(ans, score)
        k += 1
        if pos == i:
            break

    score *= (K // k) - 1
    ans = max(ans, score)
    for j in range(k + (K % k)):
        score += C[pos]
        pos = P[pos]
        ans = max(ans, score)
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
input()
A = map(int, input().split())
ans = 1
for a in A:
    ans *= a

if 1000000000000000000 < ans:
    print(-1)
else:
    print(ans)

Fixed submission:
input()
A = list(map(int, input().split()))
ans = 1

if 0 in A:
    print(0)
    exit()

for a in A:
    ans *= a
    if 1000000000000000000 < ans:
        print(-1)
        exit()

print(ans)
Buggy python submission (verdict: Runtime Error):
import math
A, B = input().split(" ")
A = int(A.strip())
B = int(B.strip().replace(".", ""))
print(math.floor(A * B / 100)

Fixed submission:
A, B = input().split(" ")
A = int(A.strip())
B = int(B.strip().replace(".", ""))
print(A * B // 100)
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = list(map(int, input().split()))

s = 0
for i in range(n-1):
    v = 0
    for j in range(i+1, n):
        v += a[j]
    s += (a[i] * v % (10**9 + 7))

s %= (10**9 + 7)

print(s)


Fixed submission:
n = int(input())
a = list(map(int, input().split()))

s = 0
ss = 0
for i in range(n):
    j = n - i - 1
    s += (a[j] * ss % (10**9 + 7))
    s %= (10**9 + 7)
    ss += a[j]

print(s)

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

s = 0
for i in range(n-1):
    for j in range(i+1, n):
        s += (a[i] * a[j])
        s %= (10**9 + 7)

print(s)


Fixed submission:
n = int(input())
a = list(map(int, input().split()))

s = 0
ss = 0
for i in range(n):
    j = n - i - 1
    s += (a[j] * ss % (10**9 + 7))
    s %= (10**9 + 7)
    ss += a[j]

print(s)
Buggy python submission (verdict: Time Limit Exceeded):
x, k, d = map(int, input().split())
  
x = abs(x)

if x > k * d:
  print(x - k * d)
else:
  g = k - int(x / d)
  if g > 0:
    if g % 2 == 1:
      g -= 1
    k = k - g

  for i in range(k):
    if x < 0:
      x += d
    else:
      x -= d

  print(abs(x))

Fixed submission:
x, k, d = map(int, input().split())
  
x = abs(x)

if x > k * d:
  print(x - k * d)
else:
  f = int(x / d)
  x = x - f * d
  g = (k - f) % 2
  if g == 1:
    x = x - d
  print(abs(x))

Buggy python submission (verdict: Time Limit Exceeded):
x, k, d = map(int, input().split())
  
x = abs(x)

g = k - int(x / d)
if g > 0:
  if g % 2 == 1:
    g -= 1
  k = k - g

for i in range(k):
  if x < 0:
    x += d
  else:
    x -= d

print(abs(x))

Fixed submission:
x, k, d = map(int, input().split())
  
x = abs(x)

if x > k * d:
  print(x - k * d)
else:
  f = int(x / d)
  x = x - f * d
  g = (k - f) % 2
  if g == 1:
    x = x - d
  print(abs(x))

Buggy python submission (verdict: Runtime Error):
x, k, d = map(int, input().split())
  
if abs(x) > k * d:
  r = x - int(abs(x)/x) * k * d
else:
  n = int(abs(x) / d)
  r1 = x - int(abs(x)/x) * n * d
  if r1 == 0:
    r = 0
  else:
    r2 = r1 - int(abs(r1)/r1) * d
    r = min(abs(r1), abs(r2))

print(r)

Fixed submission:
x, k, d = map(int, input().split())
  
x = abs(x)

if x > k * d:
  print(x - k * d)
else:
  f = int(x / d)
  x = x - f * d
  g = (k - f) % 2
  if g == 1:
    x = x - d
  print(abs(x))
Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
a = list(map(int, input().split()))
s=0
for i in range(n-1):
    b=a[i]
    for j in range(i+1,n):
        s+=b*a[j]
        s%=(10**9+7)
print(s)


Fixed submission:
n = int(input())
a = list(map(int, input().split()))
s=0
b=[]
su=0
for i in range(1,n):
    su+=a[-i]
    b.append(su)
for j in range(2,n+1):
    s+=a[-j]*b[j-2]
    s%=(10**9+7)
print(s)
Buggy python submission (verdict: Runtime Error):
n, k = map(int, input().split())
print(N*k)

Fixed submission:
n, k = map(int, input().split())
print(n*k)

Buggy python submission (verdict: Runtime Error):
n, k = map(int, input().split())
print(N*k)

Fixed submission:
n, k = map(int, input().split())
print(n*k)
Buggy python submission (verdict: Time Limit Exceeded):
n=int(input())
a = list(map(int, input().split()))
k=1
for i in a:
  k*=i
if k>10**18:
  print(-1)
else:
  print(k)

Fixed submission:
n=int(input())
a = list(map(int, input().split()))
k=1
if 0 in a:
  print(0)
else:
  for i in a:
    k*=i
    if k>10**18:
      break
  if k>10**18:
    print(-1)
  else:
    print(k)
Buggy python submission (verdict: Runtime Error):
a=input()
if a=="ABC":
  ptint("ARC")
else:
  print("ABC")

Fixed submission:
a=input()
if a=="ABC":
  print("ARC")
else:
  print("ABC")
Buggy python submission (verdict: Time Limit Exceeded):
x=int(input())
for i in range(int(x**0.5)+1):
    for j in range(-(int(x**0.5)+1),int(x**0.5)+1):
        if i**5-j**5==x:
            print(str(i)+" "+str(j))
            break
    else:
        continue
    break

Fixed submission:
x=int(input())
for n in range(1,int(x**0.5)+1):
    if x%n==0:
        for a in range(int(x**0.5)+1):
            if 5*a**4-10*a**3*n+10*a**2*n**2-5*a*n**3+n**4==x//n:
                print(str(a)+" "+str(a-n))
                break
            a=-a
            if 5*a**4-10*a**3*n+10*a**2*n**2-5*a*n**3+n**4==x//n:
                print(str(a)+" "+str(a-n))
                break
        else:
            continue
        break
Buggy python submission (verdict: Runtime Error):
n = input()
p=input()
p=p[0:-1]
if n==p:
    print("Yes")
else:
    print("No")

Fixed submission:
n, k = map(int, input().split())
if n<=k:
  print("unsafe")
else:
  print("safe")
Buggy python submission (verdict: Runtime Error):
from collections import Counter
a=int(input())
list1=[]
for i in range(a)
list1.append(input())
a=set(list1)
print(len(a))



Fixed submission:
a=int(input())
list1=[]
for i in range(a):
  list1.append(input())
a=set(list1)
print(len(a))