Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
from math import sqrt

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

upper = int(sqrt(N))+1

ans = []
flg = 0
for i in range(1,upper+1) :
    cnt = 0
    if flg :
        break
    for j,a in enumerate(A) :
        if (j+1) % i != 0 :
            continue
        
        cnt += a
    
    #print("i cnt:", i, cnt)
    
    if cnt % 2 != A[i-1] :
        ans = -1
        flg = 1
        break
    
    if A[i-1] == 1 :
        ans.append(i)
if ans != -1 :
    for i in range(upper+1,N) :
        if A[i] == 1 :
            ans.append(i+1)
if ans == -1 :
    print(ans)
else :
    print(len(ans))
    print(*ans,sep="\n")


Fixed submission:
N = int(input())
A = list(map(int,input().split()))
B = [0]*N
ans = []

for i in range(N-1,-1,-1) :
    num = i+1
    cnt = 0
    for j in range(i+num,N,num) :
        cnt += B[j]
    
    if A[i] != cnt % 2 :
        ans.append(i+1)
        B[i] = 1
    
print(len(ans))
print(*ans, sep="\n")
Buggy python submission (verdict: Runtime Error):
from operator import xor

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

D = {}

for a in A :
    if not in D :
        D[a] = 1
    else :
        D[a] += 1

if len(D) == 1 :
    if D.get(0, 0) == N :
        ans = "Yes"
    else :
        ans = "No"
elif len(D) == 2 :
    if D.get(0, 0) * 3 == N :
        ans = "Yes"
    else :
        ans = "No"
elif len(D) == 3 :
    K = list(D.keys())
    V = list(D.values())
    
    if (xor(K[0], K[1], K[2]) == 0) and (V[0] == V[1] == V[2]) :
        ans = "Yes"
    else :
        ans = "No"
else :
    ans = "No"

print(ans)


Fixed submission:
from operator import xor

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

D = {}

for a in A :
    if a not in D :
        D[a] = 1
    else :
        D[a] += 1

if len(D) == 1 and D.get(0,0) == N :
    ans = "Yes"
elif len(D) == 3 :
    V = list(D.values())
    K = list(D.keys())
    
    if xor(K[0],K[1]) != K[2] :
        ans = "No"
    elif (V[0] == V[1] == V[2]) :
        ans = "Yes"
    else :
        ans = "No"
elif len(D) == 2 :
    if D.get(0,0)*3 == N or D.get(0,0)*3 - 1 == N :
        ans = "Yes"
    else :
        ans = "No"
else :
    ans = "No"
print(ans)
Buggy python submission (verdict: Runtime Error):
N,A,B=map(int,input().split();print(min(A*N,B))

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

ans = min(A*N,B)
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int,input().split()))[::-1]
calc = 0
op = 1

for a in A :
    if op == 1 :
        calc += a
        op = -1
    else :
        calc -= a
        op = 1

for i in range(calc+1) :
    if i == calc-i :
        p = i
        break

X = [p]
op = -1
for a in A[::-1] :
    calc = a - X[-1]
    X.append(calc)

for i in range(len(X)) :
    X[i] *= 2
print(*X[:-1])



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

calc = 0

for i in range(0,len(A),2) :
    calc += A[i]
for i in range(1,len(A),2) :
    calc -= A[i]

p = calc//2

X = [0 for i in range(N)]
X[0] = p

for i in range(1,len(X)) :
    X[i] = A[i-1] - X[i-1]

ans = [x*2 for x in X]
print(*ans)

Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
A = list(map(int,input().split()))[::-1]
calc = 0
op = 1

for a in A :
    if op == 1 :
        calc += a
        op = -1
    else :
        calc -= a
        op = 1

for i in range(calc+1) :
    if i == calc-i :
        p = i
        break

X = [p]
op = -1
for a in A[::-1] :
    calc = a - X[-1]
    X.append(calc)

for i in range(len(X)) :
    X[i] *= 2
print(*X[:-1])



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

calc = 0

for i in range(0,len(A),2) :
    calc += A[i]
for i in range(1,len(A),2) :
    calc -= A[i]

p = calc//2

X = [0 for i in range(N)]
X[0] = p

for i in range(1,len(X)) :
    X[i] = A[i-1] - X[i-1]

ans = [x*2 for x in X]
print(*ans)
Buggy python submission (verdict: Runtime Error):
N,K = map(int,input().split())
edge = [[] for i in range(N)] #隣接リスト
for i in range(N-1) :
    u,v = map(lambda x: int(x)-1, input().split())
    edge[u].append(v)
    edge[v].append(u)

deg = [len(E) for E in edge] #隣接頂点数

MOD = 10**9 + 7
u = 10**5 + 1

fact = [1]*(u+1)
for i in range(1, len(fact)) :
    fact[i] = (fact[i-1] * i) % MOD

fact_inv = [1]*(u+1)
fact_inv[u] = pow(fact[u], MOD-2, MOD)
for i in range(u-1,0,-1) :
    fact_inv[i] = (fact_inv[i+1] * (i+1)) % MOD

def perm(n, k) : #nPk
    if k < 0 or n < k :
        return 0
    return (fact[n] * fact_inv[n-k]) % MOD

def F(node, parent=None) :
    if parent is None :
        res = perm(K, deg[node] + 1) #根は自身の場合の数を計算する
    else :
        res = perm(K-2, deg[node] - 1) #根以外は自身の場合の数を計算しない. 親は計算済みなので,差し引く.
    
    for next_node in edge[node] :
        if next_node == parent :
            continue
        res *= F(next_node, parent=node)
        res %= MOD
    return res

ans = F(0, parent=None)

print(ans)


Fixed submission:
import sys
sys.setrecursionlimit(10**9)

N,K = map(int,input().split())
edge = [[] for i in range(N)] #隣接リスト
for i in range(N-1) :
    u,v = map(lambda x: int(x)-1, input().split())
    edge[u].append(v)
    edge[v].append(u)

deg = [len(E) for E in edge] #隣接頂点数

MOD = 10**9 + 7
u = 10**5 + 1

fact = [1]*(u+1)
for i in range(1, len(fact)) :
    fact[i] = (fact[i-1] * i) % MOD

fact_inv = [1]*(u+1)
fact_inv[u] = pow(fact[u], MOD-2, MOD)
for i in range(u-1,0,-1) :
    fact_inv[i] = (fact_inv[i+1] * (i+1)) % MOD

def perm(n, k) : #nPk
    if k < 0 or n < k :
        return 0
    return (fact[n] * fact_inv[n-k]) % MOD

def F(node, parent=None) :
    if parent is None :
        res = perm(K, deg[node] + 1) #根は自身の場合の数を計算する
    else :
        res = perm(K-2, deg[node] - 1) #根以外は自身の場合の数を計算しない. 親は計算済みなので,差し引く.
    
    for next_node in edge[node] :
        if next_node == parent :
            continue
        res *= F(next_node, parent=node)
        res %= MOD
    return res

ans = F(0, parent=None)

print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
L = [list(map(int,input().split())) for i in range(N)]

L = sorted(L, key=lambda x: x[1])

calc = 0
ans = "Yes"

while L :
    A,B = L.pop(0)
    calc += A
    if calc > B :
        ans = "No"
        break

print(ans)


Fixed submission:
N = int(input())

L = [list(map(int,input().split())) for i in range(N)]

L = sorted(L, key=lambda x: x[1])
#print(L)

calc = 0

ans = "Yes"

for i in range(len(L)) :
    a,b = L[i]
    calc += a
    if calc > b :
        ans = "No"
        break
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N,M = map(int,input().split())
S = list(map(int,input().split()))
T = list(map(int,input().split()))

MOD = 10**9+7

a = [[0 for j in range(M+1)] for i in range(N+1)]

for i in range(N+1) :
    for j in range(M+1) :
        if i == 0 or j == 0 :
            a[i][j] = 1
        else :
            a[i][j] = a[i-1][j] + a[i][j-1] - (a[i-1][j-1] if S[i-1] != T[j-1] else 0)
            a[i][j] %= MOD

print(a[N][M])


Fixed submission:
N,M = map(int,input().split())
S = list(map(int,input().split()))
T = list(map(int,input().split()))

MOD = 10**9+7

a = [[0 for j in range(M+1)] for i in range(N+1)]

for i in range(N+1) :
    for j in range(M+1) :
        if i == 0 or j == 0 :
            a[i][j] = 1
        else :
            a[i][j] = a[i-1][j] + a[i][j-1] - (a[i-1][j-1] if S[i-1] != T[j-1] else 0)
            a[i][j] %= MOD

print(a[N][M])
Buggy python submission (verdict: Runtime Error):
N = int(input())
L = sorted([list(map(int,input().split())) for i in range(N)])

D = {}

for i in range(N-1) :
    ax,ay = L[i]
    for j in range(i+1,N) :
        bx,by = L[j]
        
        p = bx-ax
        q = by-ay
        tag = str(p)+str(q)
        if tag not in D :
            D[tag] = 1
        else :
            D[tag] += 1

ans = N-max(D.values())

print(ans)


Fixed submission:
N = int(input())
L = sorted([list(map(int,input().split())) for i in range(N)])

D = {}

for i in range(N-1) :
    ax,ay = L[i]
    for j in range(i+1,N) :
        bx,by = L[j]
        
        p = bx-ax
        q = by-ay
        tag = str(p)+str(q)
        if tag not in D :
            D[tag] = 1
        else :
            D[tag] += 1
if N == 1 :
    ans = 1
else :
    ans = N-max(D.values())

print(ans)
Buggy python submission (verdict: Runtime Error):
from collections import deque

q = deque([])

H,W = map(int,input().split())
L = []

for i in range(H) :
    S = input()
    for j in range(W) :
        if S[j] == "." :
            q.append((i,j))
    L.append(list(S))

ans = 0

while q :
    y,x = q.popleft()
    
    cnt = 1
    
    d = [1,-1]
    
    for dy in d :
        ny = y
        
        while True :
            ny += dy
            
            if (ny < 0) or (ny >= H) :
                break
            
            if L[ny][x] == "#" :
                break
            
            cnt += 1
    
    for dx in d :
        nx = x
        
        while True :
            nx += dx
            
            if (nx < 0) or (nx >= W) :
                break
            
            if L[y][nx] == "#" :
                break
            
            cnt += 1
    
    ans = max(ans,cnt)

print(ans)


Fixed submission:
a,b,c = map(int,input().split())

print(a+b+c-max(a,b,c))
Buggy python submission (verdict: Runtime Error):
N,A,B,C,D = map(int,input().split())
S = input()
A -= 1
B -= 1
C -= 1
D -= 1

if S[A:max(C,D)+1].count("##") == 0 :
    elif C < D :
        print("Yes")
    else :
        if S[B-1:D+2].count("...") :
            print("Yes")
        else :
            print("No")
else :
    print("No")

Fixed submission:
N,a,b,c,d = map(int,input().split())
S = input()
a -= 1
b -= 1
c -= 1
d -= 1

if c < d :
    if (S[b:d+1].count("##") == 0) and (S[a:c+1].count("##") == 0) :
        ans = "Yes"
    else :
        ans = "No"
else :
    if (S[b:d+1].count("##") == 0) and (S[a:c+1].count("##") == 0) :
        flg1 = 1
    else :
        flg1 = 0
    

    if S[a:d+1].count("...") >= 1 :
        flg2 = 1
    else :
        flg2 = 0
        
    for i in range(b,d+1) :
        if (S[i-1]+S[i]+S[i+1] == "...") :
            flg3 = 1
            break
    else :
        flg3 = 0
    
    
    if flg1*flg3 :
        ans = "Yes"
    else :
        ans = "No"
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
R,G,B,N = map(int,input().split())

C = sorted([R,G,B])
R = C[2]
G = C[1]
B = C[0]

ans = 0

for r in range(N//R + 1) :
    for g in range((N-r)//G + 1) :
        calc = r*R + g*G
        
        if (N-calc) < 0 :
            break
        
        if (N-calc) % B == 0 :
            ans += 1
print(ans)


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

ans = 0


for r in range(N+1) :
    
    for g in range(N+1) :
        if (N - (r*R + g*G)) < 0 : continue
        if (N - (r*R + g*G)) % B == 0 :
            ans += 1
            #print(r,g)
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
R,G,B,N = map(int,input().split())

ans = 0

for r in range(N//R + 1) :
    for g in range((N-r)//G + 1) :
        calc = r*R + g*G
        
        if (N-calc) < 0 :
            break
        
        if (N-calc) % B == 0 :
            ans += 1
print(ans)


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

ans = 0


for r in range(N+1) :
    
    for g in range(N+1) :
        if (N - (r*R + g*G)) < 0 : continue
        if (N - (r*R + g*G)) % B == 0 :
            ans += 1
            #print(r,g)
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque

H,W = map(int,input().split())
A = [list(input()) for i in range(H)]

dist = [[float("inf")]*W for i in range(H)]
q = deque([])
for y in range(H) :
    for x in range(W) :
        if A[y][x] == "#" :
            dist[y][x] = 0
            q.append((y,x))

dxy = [(-1,0),(1,0),(0,-1),(0,1)]

while q :
    y,x = q.popleft()
    for dy,dx in dxy :
        ny,nx = y+dy,x+dx
        if ny<0 or ny>=H or nx<0 or nx>=W :
            continue
        if dist[ny][nx] > dist[y][x] + 1 :
            dist[ny][nx] = dist[y][x] + 1
            q.append((ny,nx))

ans = 0
for y in range(H) :
    ans = max(ans, max(dist[y]))
print(ans)


Fixed submission:
from collections import deque

H,W = map(int,input().split())
A = [input() for i in range(H)]

L = [[float("inf") for x in range(W)] for y in range(H)]



dxy = [(-1,0), (1,0), (0,-1), (0,1)]

Q = deque()

for y in range(H) :
    for x in range(W) :
        if A[y][x] != "#" :
            continue
        
        L[y][x] = 0
        
        Q.append((y,x))

while Q :
    y,x = Q.popleft()

    for dy,dx in dxy :
        ny = y+dy
        nx = x+dx

        if (ny < 0) or (ny >= H) or (nx < 0) or (nx >= W) :
            continue

        if L[ny][nx] <= (L[y][x] + 1) :
            continue
        
        L[ny][nx] = L[y][x] + 1
        
        Q.append((ny,nx))

ans = 0

for y in range(H) :
    ans = max(ans, max(L[y]))
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
from collections import deque

H,W = map(int,input().split())
A = [input() for i in range(H)]

L = [[float("inf") for x in range(W)] for y in range(H)]



dxy = [(-1,0), (1,0), (0,-1), (0,1)]

Q = deque()

for y in range(H) :
    for x in range(W) :
        if A[y][x] != "#" :
            continue
        
        L[y][x] = 0
        
        Q.append((y,x))

while Q :
    y,x = Q.popleft()

    for dy,dx in dxy :
        ny = y+dy
        nx = x+dx

        if (ny < 0) or (ny >= H) or (nx < 0) or (nx >= W) :
            continue

        if L[ny][nx] <= (L[y][x] + 1) :
            continue
        
        L[ny][nx] = L[y][x] + 1
        
        Q.append((ny,nx))

ans = 0

for y in range(H) :
    for x in range(W) :
        ans = max(ans, L[y][x])
print(ans)



Fixed submission:
from collections import deque

H,W = map(int,input().split())
A = [input() for i in range(H)]

L = [[float("inf") for x in range(W)] for y in range(H)]



dxy = [(-1,0), (1,0), (0,-1), (0,1)]

Q = deque()

for y in range(H) :
    for x in range(W) :
        if A[y][x] != "#" :
            continue
        
        L[y][x] = 0
        
        Q.append((y,x))

while Q :
    y,x = Q.popleft()

    for dy,dx in dxy :
        ny = y+dy
        nx = x+dx

        if (ny < 0) or (ny >= H) or (nx < 0) or (nx >= W) :
            continue

        if L[ny][nx] <= (L[y][x] + 1) :
            continue
        
        L[ny][nx] = L[y][x] + 1
        
        Q.append((ny,nx))

ans = 0

for y in range(H) :
    ans = max(ans, max(L[y]))
print(ans)
Buggy python submission (verdict: Runtime Error):
try :
    from math import gcd
except ImportError :
    from fractions import gcd


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

X = [A[0]]
Y = [A[-1]]

for i in range(1,N) :
    X.append(gcd(X[i-1], A[i]))

for i in range(N-2,-1,-1) :
    Y.append(gcd(Y[i-1], A[i]))

Y = Y[::-1]

ans = 0

for i in range(N) :
    if i == 0 :
        ans = max(ans, Y[1])
    elif i == N-1 :
        ans = max(ans, X[N-2])
    else :
        ans = max(ans, gcd(X[i-1], Y[i+1]))

print(ans)


Fixed submission:
try :
    from math import gcd
except ImportError :
    from fractions import gcd

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

L = [0]
R = [0]

for i in range(N) :
    L.append(gcd(L[i], A[i]))
    R.append(gcd(R[i], A[N-1-i]))

M = []
R = R[::-1]
for i in range(N) :
    M.append(gcd(L[i], R[i+1]))


print(max(M))
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
S = input()

ans = 0

for i in range(N-1) :
    if S[i] == "#" and S[i+1] == "." :
        S = S[:i+1] + "#" + S[i+2:]
        ans += 1
print(ans)



Fixed submission:
N = int(input())
S = input()
ans = cnt = S.count(".")
for s in S :
    if s == "#" :
        cnt += 1
    else :
        cnt -= 1
    ans = min(ans,cnt)
print(ans)

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

ans = 0

for i in range(N-1) :
    if S[i] == "#" and S[i+1] == "." :
        S = S[:i+1] + "#" + S[i+2:]
        ans += 1
print(ans)



Fixed submission:
N = int(input())
S = input()
ans = cnt = S.count(".")
for s in S :
    if s == "#" :
        cnt += 1
    else :
        cnt -= 1
    ans = min(ans,cnt)
print(ans)
Buggy python submission (verdict: Runtime Error):
N,K = map(int,input().split())
S = input() + "#"
A = []
cnt = 1
for i in range(N) :
    if S[i] == S[i+1] :
        cnt += 1
    else :
        A.append(cnt)
        cnt = 1

if S[0] == "1" :
    ans = sum(A[:2*K+1])
    calc = ans
    for i in range(2*K+1, len(A)) :
        calc += A[i]
        if i % 2 == 1 :
            calc -= (A[i-1-2*K] + A[i-2*K])
        ans = max(ans, calc)
else :
    ans = sum(A[:2*K])
    for i in range(2*K,len(A)) :
        calc += A[i]
        if i == 2*K :
            calc -= A[0]
        elif i % 2 == 0  :
            calc -= (A[i-1-2*K] + A[i-2*K])
        ans = max(ans, calc)

print(ans)


Fixed submission:
N,K = map(int,input().split())
S = input() + "#"
A = []
cnt = 1
for i in range(N) :
    if S[i] == S[i+1] :
        cnt += 1
    else :
        A.append(cnt)
        cnt = 1

if S[0] == "1" :
    ans = sum(A[:2*K+1])
    calc = ans
    for i in range(2*K+1, len(A)) :
        calc += A[i]
        if i % 2 == 1 :
            calc -= (A[i-1-2*K] + A[i-2*K])
        ans = max(ans, calc)
else :
    ans = sum(A[:2*K])
    calc = ans
    for i in range(2*K,len(A)) :
        calc += A[i]
        if i == 2*K :
            calc -= A[0]
        elif i % 2 == 0  :
            calc -= (A[i-1-2*K] + A[i-2*K])
        ans = max(ans, calc)

print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N,Q = map(int,input().split())
S = input()
L = [list(map(int,input().split())) for i in range(Q)]

for left,right in L :
    left -= 1
    ans = S[left:right].count("AC")
    print(ans)



Fixed submission:
N,Q = map(int,input().split())
S = input()
L = [list(map(int,input().split())) for i in range(Q)]

loc = [0 for i in range(N+1)]
for i in range(N) :
    if S[i:i+2] == "AC" :
        loc[i+1] = loc[i]+1
    else :
        loc[i+1] = loc[i]
for l,r in L :
    l -= 1
    r -= 1
    ans = loc[r] - loc[l]
    print(ans)
Buggy python submission (verdict: Runtime Error):
A,B = map(int,input().split())
a,b = map(int,input().split())

print((H-h)*(W-w))


Fixed submission:
H,W = map(int,input().split())
h,w = map(int,input().split())

print((H-h)*(W-w))
Buggy python submission (verdict: Runtime Error):
N,A,B,C = map(int,input().split())
L = list(int(input()) for i in range(N))

def f(cur,a,b,c) :
    if cur == N :
        if min(a,b,c) > 0 :
            return abs(a-A) + abs(b-B) + abs(c-C) - 30
        else :
            return float("inf")
    ret0 = f(cur+1,a,b,c)
    ret1 = f(cur+1,a+L[cur],b,c) + 10
    ret2 = f(cur+1,a,b+L[cur],c) + 10
    ret3 = f(cur+1,a,b,c+L[cur]) + 10
    return min(ret0,ret1,ret2,ret3)
    
print(f(0,
        

Fixed submission:
N,A,B,C = map(int,input().split())
L = list(int(input()) for i in range(N))

def f(cur,a,b,c) :
    if cur == N :
        if min(a,b,c) > 0 :
            return abs(a-A) + abs(b-B) + abs(c-C) - 30
        else :
            return float("inf")
    ret0 = f(cur+1,a,b,c)
    ret1 = f(cur+1,a+L[cur],b,c) + 10
    ret2 = f(cur+1,a,b+L[cur],c) + 10
    ret3 = f(cur+1,a,b,c+L[cur]) + 10
    return min(ret0,ret1,ret2,ret3)
    
print(f(0,0,0,0))
Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
L = list(map(int,input().split()))
if N >= M :
    ans = 0
else :
    L = sorted(L)
    A = []
    for i in range(M-1) :
        A.append(L[i+1]-L[i])
A = sorted(A)
ans = A[:M-N]
print(ans)


Fixed submission:
N,M = map(int,input().split())
L = list(map(int,input().split()))
if N >= M :
    ans = 0
else :
    L = sorted(L)
    A = []
    for i in range(M-1) :
        A.append(L[i+1]-L[i])
    A = sorted(A)
    ans = sum(A[:M-N])
print(ans)

Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
L = list(map(int,input().split()))
L = sorted(L)
left = ""
right = ""

if N >= M :
    ans = 0
else :
    for i in range(N) :
        if i == 0 :
            left = L[0]
            L = L[1:]
        elif i == 1 :
            right = L[-1]
            L = L[:-1]
        else :
            if abs(left-L[0]) < abs(right-L[-1]) :
                right = L[-1]
                L = L[:-1]
            else :
                left = L[0]
                L = L[1:]
    #print(L)
    ans = 0

    while len(L) :
        #print(abs(left-L[0]),abs(right-L[-1]))
        if abs(left-L[0]) < abs(right-L[-1]) :
            ans += abs(left-L[0])
            left = L[0]
            L = L[1:]
        else :
            ans += abs(right-L[-1])
            right = L[-1]
            L = L[:-1]

print(ans)
#print(L)


Fixed submission:
N,M = map(int,input().split())
L = list(map(int,input().split()))
if N >= M :
    ans = 0
else :
    L = sorted(L)
    A = []
    for i in range(M-1) :
        A.append(L[i+1]-L[i])
    A = sorted(A)
    ans = sum(A[:M-N])
print(ans)

Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
L = list(map(int,input().split()))
L = sorted(L)
left = ""
right = ""

for i in range(N) :
    if i >= M :
        break
    if i == 0 :
        left = L[0]
        L = L[1:]
    elif i == 1 :
        right = L[-1]
        L = L[:-1]
    else :
        if abs(left-L[0]) < abs(right-L[-1]) :
            right = L[-1]
            L = L[:-1]
        else :
            left = L[0]
            L = L[1:]
#print(L)
ans = 0

while len(L) :
    #print(abs(left-L[0]),abs(right-L[-1]))
    if abs(left-L[0]) < abs(right-L[-1]) :
        ans += abs(left-L[0])
        left = L[0]
        L = L[1:]
    else :
        ans += abs(right-L[-1])
        right = L[-1]
        L = L[:-1]

print(ans)
#print(L)


Fixed submission:
N,M = map(int,input().split())
L = list(map(int,input().split()))
if N >= M :
    ans = 0
else :
    L = sorted(L)
    A = []
    for i in range(M-1) :
        A.append(L[i+1]-L[i])
    A = sorted(A)
    ans = sum(A[:M-N])
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())

L = list(list(map(int,input().split())) for i in range(N))
#print(L)
#turn = "taka"
takapoint = 0
aokipoint = 0

L = sorted(L,key=lambda x: x[1],reverse=True)
L = sorted(L,key=lambda x: x[0],reverse=True)

for i in range(N) :
#while len(L) :
    if not i % 2 :
        L = sorted(L,key=lambda x: x[0],reverse=True)
        takapoint += L[0][0]
        L.pop(0)
        #turn = "aoki"
    else :
        L = sorted(L,key=lambda x: x[1],reverse=True)
        aokipoint += L[0][1]
        L.pop(0)
        #turn = "taka"
ans = takapoint - aokipoint

print(ans)


Fixed submission:
N = int(input())
L = []
ans = 0
for i in range(N) :
    a,b = map(int,input().split())
    L.append([a,b,a+b])
L = sorted(L,key=lambda x:x[2],reverse=True)
takapoint = 0
aokipoint = 0
for i in range(N) :
    if i % 2 == 0 :
        takapoint += L[i][0]
    else :
        aokipoint += L[i][1]
ans = takapoint - aokipoint
print(ans)

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

L = list(list(map(int,input().split())) for i in range(N))
#print(L)
turn = "taka"
takapoint = 0
aokipoint = 0

while len(L) :
    if turn == "taka" :
        L = sorted(L,key=lambda x: x[1],reverse=True)
        L = sorted(L,key=lambda x: x[0],reverse=True)
        takapoint += L[0][0]
        L.pop(0)
        turn = "aoki"
    else :
        L = sorted(L,key=lambda x: x[0],reverse=True)
        L = sorted(L,key=lambda x: x[1],reverse=True)
        aokipoint += L[0][1]
        L.pop(0)
        turn = "taka"
ans = takapoint - aokipoint

print(ans)


Fixed submission:
N = int(input())
L = []
ans = 0
for i in range(N) :
    a,b = map(int,input().split())
    L.append([a,b,a+b])
L = sorted(L,key=lambda x:x[2],reverse=True)
takapoint = 0
aokipoint = 0
for i in range(N) :
    if i % 2 == 0 :
        takapoint += L[i][0]
    else :
        aokipoint += L[i][1]
ans = takapoint - aokipoint
print(ans)
Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())

print(int(A*B/2))


Fixed submission:
a,b,c = map(int,input().split())

print(int(a*b/2))