Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
H, W, K = map(int, input().split())
grid = []
for _ in range(H):
    w = input()
    grid.append(w)

output = [[0] * W for _ in range(H)]
k = 1
for i in range(H):
    for j in range(W):
        if grid[i][j] == '#':
            output[i][j] = k
            k += 1

def h_paint(i, j):
    dj = j
    k = output[i][j]
    while (dj-1 >= 0):
        if output[i][dj - 1] == 0:
            output[i][dj - 1] = k
            dj -= 1
        else:
            break
    dj = j
    while (dj + 1 < W):
        if output[i][dj + 1] == 0:
            output[i][dj + 1] = k
            dj += 1
        else:
            break
            

for i in range(H):
    for j in range(W):
        if grid[i][j] == '#':
            h_paint(i, j)

for i in range(H-1, -1, -1):
    for j in range(W):
        if output[i][j] == 0:
            output[i][j] = output[i + 1][j]

for i in range(1, H):
    for j in range(W):
        if output[i][j] == 0:
            output[i][j] = output[i-1][j]

for o in output:
    print(*o)

Fixed submission:
H, W, K = map(int, input().split())
grid = []
for _ in range(H):
    w = input()
    grid.append(w)

output = [[0] * W for _ in range(H)]
k = 1
for i in range(H):
    for j in range(W):
        if grid[i][j] == '#':
            output[i][j] = k
            k += 1

def h_paint(i, j):
    dj = j
    k = output[i][j]
    while (dj-1 >= 0):
        if output[i][dj - 1] == 0:
            output[i][dj - 1] = k
            dj -= 1
        else:
            break
    dj = j
    while (dj + 1 < W):
        if output[i][dj + 1] == 0:
            output[i][dj + 1] = k
            dj += 1
        else:
            break
            

for i in range(H):
    for j in range(W):
        if grid[i][j] == '#':
            h_paint(i, j)

for i in range(H-2, -1, -1):
    for j in range(W):
        if output[i][j] == 0:
            output[i][j] = output[i + 1][j]

for i in range(1, H):
    for j in range(W):
        if output[i][j] == 0:
            output[i][j] = output[i-1][j]

for o in output:
    print(*o)
Buggy python submission (verdict: Runtime Error):
A, B = map(int, input().split())
if (1 <= A <= 9) and (1 <= B <= 9):
    print(a * b)
else:
    print(-1)

Fixed submission:
A, B = map(int, input().split())
if (1 <= A <= 9) and (1 <= B <= 9):
    print(A * B)
else:
    print(-1)
Buggy python submission (verdict: Time Limit Exceeded):
# input
N, K = map(int, input().split())
A = list(map(int, input().split()))
F = list(map(int, input().split()))

# 考え方
# 目標：最大値の最小化
# にぶたん
# 必要条件：A[i] <= A[i+1] => F[i] >= F[i+1]

# sort
# Aは昇順、Fは降順(任意)
A = sorted(A)
F = sorted(F, reverse=True)

# にぶたん(参考：juppy)
ng = -1
ok = 10 ** 12  # 取り得る最大値

while ok - ng > 1:  # 収束判定
    mid = (ok + ng) // 2
    cost = 0

    for i, e in enumerate(A):
        cost += max(0, e - mid // F[i])
    
    if cost <= K:
        ok = mid
    
    else:
        ng = mid

print(ok)

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

# 考え方
# 目標：最大値の最小化
# にぶたん
# 必要条件：A[i] <= A[i+1] => F[i] >= F[i+1]

# sort
# Aは昇順、Fは降順(任意)
A = sorted(A)
F = sorted(F, reverse=True)

# にぶたん(参考：juppy)
ng = -1
ok = 10 ** 12  # 取り得る最大値

while ok - ng > 1:  # 収束判定
    mid = (ok + ng) // 2
    cost = 0

    for i, e in enumerate(A):
        cost += max(0, e - mid // F[i])
    
    if cost <= K:
        ok = mid
    
    else:
        ng = mid

print(ok)

Buggy python submission (verdict: Runtime Error):
# input
N, K = map(int, input().split())
A = list(map(int, input().split()))
F = list(map(int, input().split()))

# 考え方
# 目標：最大値の最小化
# にぶたん
# 必要条件：A[i] <= A[i+1] => F[i] >= F[i+1]

# sort
# Aは昇順、Fは降順(任意)
A = sorted(A)
F = sorted(F, reverese=True)

# にぶたん(参考：juppy)
ng = -1
ok = 10 ** 12  # 取り得る最大値

while ok - ng > 1:  # 収束判定
    mid = (ok + ng) // 2
    cost = 0

    for i, e in enumerate(A):
        cost += max(0, e - mid // F[i])
    
    if cost <= K:
        ok = mid
    
    else:
        ng = mid

print(ok)

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

# 考え方
# 目標：最大値の最小化
# にぶたん
# 必要条件：A[i] <= A[i+1] => F[i] >= F[i+1]

# sort
# Aは昇順、Fは降順(任意)
A = sorted(A)
F = sorted(F, reverse=True)

# にぶたん(参考：juppy)
ng = -1
ok = 10 ** 12  # 取り得る最大値

while ok - ng > 1:  # 収束判定
    mid = (ok + ng) // 2
    cost = 0

    for i, e in enumerate(A):
        cost += max(0, e - mid // F[i])
    
    if cost <= K:
        ok = mid
    
    else:
        ng = mid

print(ok)
Buggy python submission (verdict: Runtime Error):
# ワ―シャルフロイドで解くよ
def main():
    import sys
    input = sys.stdin.readline  # 1行ごとの入力を繰り返し扱う場合の高速化
    N, M, L = map(int, input().split())
    # distanceを格納(未到達は無限遠として初期化)
    d = [[10 ** 12] * N for _ in range(N)]  
    # input-edges
    for i in range(M):
        a, b, c = map(int, input().split())
        if L >= c: # 距離がLより大きいのは無視
            d[a - 1][b - 1] = d[b - 1][a - 1] = c
    for i in range(N):
        d[i][i] = 0  # 自己ループ無
    
    # ワ―シャルフロイド法適用
    # 町間の最短距離を一度求める。
    for k in range(N):
        for i in range(N):
            for j in range(N):
                d[i][j] = min(d[i][k] + d[k][j], d[i][j])
    
    # 先ほど求めた町間の内、最短距離がL以下のものを距離1で結ぶ。
    edge = [[10 ** 12] * N for _ in range(N)]
    for i in range(N):
        for j in range(N):
            if d[i][j] <= L:
                edge[i][j] = 1
    
    # もう一度ワ―シャルフロイド法適用
    for k in range(N):
        for i in range(N):
            for j in range(N):
                edge[i][j] = min(edge[i][k] + edge[k][j], edge[i][j])
    
    # input-query
    Q = int(input())
    for _ in range(N):
        s, t = map(int, input().split())
        if edge[s - 1][t - 1] >= 10 ** 12:
            print(-1)
        else:
            print(edge[s - 1][t - 1] - 1)  # 最初に燃料Lがある分、マイナス1をする。
    
if __name__ == "__main__":
    main()

Fixed submission:
# ワ―シャルフロイドで解くよ
def main():
    import sys
    input = sys.stdin.readline  # 1行ごとの入力を繰り返し扱う場合の高速化
    N, M, L = map(int, input().split())
    # distanceを格納(未到達は無限遠として初期化)
    d = [[10 ** 12] * N for _ in range(N)]  
    # input-edges
    for i in range(M):
        a, b, c = map(int, input().split())
        if L >= c: # 距離がLより大きいのは無視
            d[a - 1][b - 1] = d[b - 1][a - 1] = c
    for i in range(N):
        d[i][i] = 0  # 自己ループ無
    
    # ワ―シャルフロイド法適用
    # 町間の最短距離を一度求める。
    for k in range(N):
        for i in range(N):
            for j in range(N):
                d[i][j] = min(d[i][k] + d[k][j], d[i][j])
    
    # 先ほど求めた町間の内、最短距離がL以下のものを距離1で結ぶ。
    edge = [[10 ** 12] * N for _ in range(N)]
    for i in range(N):
        for j in range(N):
            if d[i][j] <= L:
                edge[i][j] = 1
    
    # もう一度ワ―シャルフロイド法適用
    for k in range(N):
        for i in range(N):
            for j in range(N):
                edge[i][j] = min(edge[i][k] + edge[k][j], edge[i][j])
    
    # input-query
    Q = int(input())
    for _ in range(Q):
        s, t = map(int, input().split())
        if edge[s - 1][t - 1] >= 10 ** 12:
            print(-1)
        else:
            print(edge[s - 1][t - 1] - 1)  # 最初に燃料Lがある分、マイナス1をする。
    
if __name__ == "__main__":
    main()
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
S = input()
res = 0
twices = list()
for i in range(N-1):
    for j in range(i + 1, N):
        t = ''
        si, sj = i, j
        length = 0
        while sj < N and S[si] == S[sj] and i+length<=j:
            t = t + S[si]
            si += 1
            sj += 1
            length += 1
        if i + length <= j:
            res = max(res, length)
print(res)

Fixed submission:
N = int(input())
S = input()

res = 0
for k in range(1, N):
    cnt = 0
    for i in range(N - k):
        if i + k < N and S[i + k] == S[i]:
            cnt += 1
        else:
            cnt = 0
        cnt = min(k, cnt)
        res = max(cnt, res)

print(res)
Buggy python submission (verdict: Runtime Error):
N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
res = 0
res += B[A[0]]
for i in range(1, N):
    res += B[A[i]-1]
    if A[i - 1] == A[i] - 1:
        res += C[A[i - 1]-1]

print(res)

Fixed submission:
N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
res = 0
res += B[A[0]-1]
for i in range(1, N):
    res += B[A[i]-1]
    if A[i - 1] == A[i] - 1:
        res += C[A[i - 1]-1]

print(res)

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
res = 0
res += B[A[0]-1]
for i in range(1, N):
    res += B[A[i]-1]
    if A[i - 1] == A[i] - 1:
        res += C[A[i - 1]]

print(res)

Fixed submission:
N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
res = 0
res += B[A[0]-1]
for i in range(1, N):
    res += B[A[i]-1]
    if A[i - 1] == A[i] - 1:
        res += C[A[i - 1]-1]

print(res)

Buggy python submission (verdict: Runtime Error):
N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
res = 0
res += B[0]
for i in range(1, N):
    res += B[i]
    if A[i - 1] = A[i] - 1:
        res += C[i - 1]

print(res)

Fixed submission:
N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
res = 0
res += B[A[0]-1]
for i in range(1, N):
    res += B[A[i]-1]
    if A[i - 1] == A[i] - 1:
        res += C[A[i - 1]-1]

print(res)
Buggy python submission (verdict: Runtime Error):
N = int(input())
B = list(map(int, input().split()))
res = B[0]
for i in range(1, N):
    res += min(B[i - 1], B[i])

print(res)

Fixed submission:
N = int(input())
B = list(map(int, input().split()))
res = B[0]
for i in range(1, N-1):
    res += min(B[i - 1], B[i])
res += B[-1]
print(res)
Buggy python submission (verdict: Runtime Error):
N = int(input())
res = sum(list(range(N)))
print(res)

Fixed submission:
N = int(input())
res = N * (N - 1) // 2
print(res)
Buggy python submission (verdict: Runtime Error):
a = int(input())
s = input()
if a >= '3200':
    print(s)
else:
    print('red')

Fixed submission:
a = int(input())
s = input()
if a >= 3200:
    print(s)
else:
    print('red')
Buggy python submission (verdict: Runtime Error):
import bisect
S = input()
T = input()
OUT = 10**5

N = len(S)
M = len(T)
indice = [0]*M
# 素直にやるとO(NM)かかるので工夫が必要
A = [[] for _ in range(26)]
for i in range(N):
    A[ord(S[i]) - ord('a')].append(i + 1)

res = 0
b = 0
for j in range(M):
    tj = ord(T[j]) - ord('a')
    if len(A[tj]) == 0:
        print(-1)
        exit()
    r = bisect.bisect_right(A[tj], b)
    if len(A[tj]) > r:
        res += A[tj][r] - b
        b = A{tj}[r]
    else:
        res += N - b + A[tj][0]
        b = A[tj][0]

print(res)

Fixed submission:
import bisect
S = input()
T = input()
OUT = 10**5

N = len(S)
M = len(T)
indice = [0]*M
# 素直にやるとO(NM)かかるので工夫が必要
A = [[] for _ in range(26)]
for i in range(N):
    A[ord(S[i]) - ord('a')].append(i + 1)

res = 0
b = 0
for j in range(M):
    tj = ord(T[j]) - ord('a')
    if len(A[tj]) == 0:
        print(-1)
        exit()
    r = bisect.bisect_right(A[tj], b)
    if len(A[tj]) > r:
        res += A[tj][r] - b
        b = A[tj][r]
    else:
        res += N - b + A[tj][0]
        b = A[tj][0]

print(res)
Buggy python submission (verdict: Time Limit Exceeded):
S = input()
N = len(S)

dp = [[0 for _ in range(13)] for _ in range(N+1)]
dp[0][0] = 1
MOD = 10**9 + 7
mul = 1
# n桁目の?は10^nを13で割った余り(mul)と掛け合わせて足される

for i in range(N):
    for k in range(10):
        if S[-i-1] != '?' and S[-i-1] != str(k):
            continue
        for j in range(13):
            dp[i+1][(j + mul * k) % 13] += dp[i][j]
    mul = (mul * 10) % 13
    for j in range(13):
        dp[i+1][j] %= MOD

res = dp[N][5]
print(res)


Fixed submission:
S = input()
N = len(S)

dp = [[0 for _ in range(13)] for _ in range(N+1)]
dp[0][0] = 1
MOD = 10**9 + 7
mul = 1
# n桁目の?は10^nを13で割った余り(mul)と掛け合わせて足される

for i in range(N):
    for k in range(10):
        if S[-i-1] != '?' and S[-i-1] != str(k):
            continue
        for j in range(13):
            dp[i+1][(j + mul * k) % 13] += dp[i][j]
    mul = (mul * 10) % 13
    for j in range(13):
        dp[i+1][j] %= MOD

res = dp[N][5]
print(res)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
a = list(map(int, input().split()))
b = [0]*N

for i in range(N - 1, -1, -1):
    if i > N // 2:
        b[i] = a[i]
    else:
        si = 0
        for j in range(i + 1, N):
            if j % (i+1) == 0:
              si += b[j]
        if si % 2 == a[i]:
            b[i] = 0
        else:
            b[i] = 1

if a == b:
    print(sum(b))
    for i in range(N):
        if b[i] == 1:
            print(i+1 ,end=' ')
else:
    print(-1)    

Fixed submission:
N = int(input())
a = list(map(int, input().split()))
b = [0]*N

for i in range(N, 0, -1):
    if i > N // 2:
        b[i-1] = a[i-1]
    else:
        si = 0
        for j in range(i+i, N+1, i):
            si += b[j-1]
        if si % 2 == a[i-1]:
            b[i-1] = 0
        else:
            b[i-1] = 1

print(sum(b))
for i in range(N):
    if b[i] == 1:
        print(i+1 ,end=' ')
Buggy python submission (verdict: Time Limit Exceeded):
from collections import defaultdict as dd

N, M = map(int, input().split())
MOD = 10**9 + 7
s = list(map(int, input().split()))
t = list(map(int, input().split()))

dp = [[0 for i in range(M+1)] for j in range(N+1)]
for j in range(M):
    dp[1][j + 1] = dp[1][j] + 1 if s[0] == t[j] else dp[1][j]

for i in range(N):
    dp[i + 1][1] = dp[i][1] + 1 if t[0] == s[i] else dp[i][1]

if N > 1 and M > 1:
    for i in range(1, N):
        for j in range(1, M):
            if s[i] == t[j]:
                dp[i + 1][j + 1] = dp[i][j + 1] + dp[i + 1][j] + 1
            else:
                dp[i + 1][j + 1] = dp[i][j+1] + dp[i+1][j] - dp[i][j]
    
print((dp[N][M] + 1)%MOD)


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

dp = [[0 for i in range(M+1)] for j in range(N+1)]
for j in range(M):
    dp[1][j + 1] = dp[1][j] + 1 if s[0] == t[j] else dp[1][j]

for i in range(N):
    dp[i + 1][1] = dp[i][1] + 1 if t[0] == s[i] else dp[i][1]

for i in range(1, N):
    for j in range(1, M):
        if s[i] == t[j]:
            dp[i + 1][j + 1] = (dp[i][j + 1] + dp[i + 1][j] + 1)%MOD
        else:
            dp[i + 1][j + 1] = (dp[i][j+1] + dp[i+1][j] - dp[i][j])%MOD
    
print((dp[N][M] + 1)%MOD)
Buggy python submission (verdict: Runtime Error):
N, M = map(int, input().split())
S = []
for _ in range(M):
    ks = list(map(int, input().split()))
    S.append(ks[1:])
P = list(map(int, input().split()))

ans = 0
for i in range(2**M):
    bi = str(bin(i))[2:]
    bi = bi.zfill(M)
    isAddable = True
    for j in range(M):
        s_sum = 0
        for s in S[j]:
            if bi[s-1] == '1':
                s_sum += 1
        if s_sum % 2 != P[j]:
            isAddable = False
            break
    if isAddable:
        ans += 1
print(ans)

Fixed submission:
n, m = map(int, input().split())
s = []
for i in range(m):
    inputs = list(map(int, input().split()))
    k = inputs[0]
    s.append(inputs[1:])

p = list(map(int, input().split()))

res = 0
for i in range(2 ** n):
    flag = True
    bit_i = bin(i)[2:].zfill(n)
    for j in range(m):
        sum_s = 0
        for idx in s[j]:
            sum_s += int(bit_i[idx-1])
        if sum_s % 2 != p[j]:
            flag = False
            break
    if flag:
        res += 1

print(res)
Buggy python submission (verdict: Runtime Error):
n, m = map(int, input().split())
res = [0,10**5]
for i in ragne(m):
    l, r = map(int, input().split())
    res[0] = max(res[0], l)
    res[1] = min(res[1], r)

print(max(res[1]-res[0]+1,0))

Fixed submission:
n, m = map(int, input().split())
res = [0,10**5]
for i in range(m):
    l, r = map(int, input().split())
    res[0] = max(res[0], l)
    res[1] = min(res[1], r)

print(max(res[1]-res[0]+1,0))

Buggy python submission (verdict: Runtime Error):
n, m = map(int, input().split())
res = [0,10**5]
for i in ragne(m):
    l, r = map(int, input().split())
    res[0] = max(res[0], l)
    res[1] = min(res[1], r)

print(max(res[1]-res[0]+1),0)

Fixed submission:
n, m = map(int, input().split())
res = [0,10**5]
for i in range(m):
    l, r = map(int, input().split())
    res[0] = max(res[0], l)
    res[1] = min(res[1], r)

print(max(res[1]-res[0]+1,0))
Buggy python submission (verdict: Runtime Error):
#UnionFindクラス
class UnionFind(object):
 
    def __init__(self, n):
        self.par = [i for i in range(n)]
        self.rank = [0 for i in range(n)]
        self.size=[1 for i in range(n)]
 
    def find(self, x):
  
        if self.par[x] == x:
            return x
        else:
            self.par[x]=self.find(self.par[x])
            return self.par[x]
        
    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)
        if x != y:
            if self.rank[x] < self.rank[y]:
                x, y = y, x
            if self.rank[x] == self.rank[y]:
                self.rank[x] += 1
            self.par[y] = x
            self.size[x]+=self.size[y]
            
    def same(self, x, y):
        return self.find(x) == self.find(y)
    
    def tree_size(self,x):
        return self.size[self.find(x)]
    
def main():
    n,m = map(int, input().split())
    uf = UnionFind(n)
    for i in range(m):
        x,y,z = map(int, input().split())
        uf.union(x,y)
    res = n
    for i in range(n):
        if uf.par[i] == i:
            res -= 1
    print(res)

if __name__ == '__main__':
    main()

Fixed submission:
#UnionFindクラス
class UnionFind(object):
 
    def __init__(self, n):
        self.par = [i for i in range(n)]
        self.rank = [0 for i in range(n)]
        self.size=[1 for i in range(n)]
 
    def find(self, x):
  
        if self.par[x] == x:
            return x
        else:
            self.par[x]=self.find(self.par[x])
            return self.par[x]
        
    def union(self, x, y):
        x = self.find(x)
        y = self.find(y)
        if x != y:
            if self.rank[x] < self.rank[y]:
                x, y = y, x
            if self.rank[x] == self.rank[y]:
                self.rank[x] += 1
            self.par[y] = x
            self.size[x]+=self.size[y]
            
    def same(self, x, y):
        return self.find(x) == self.find(y)
    
    def tree_size(self,x):
        return self.size[self.find(x)]
    
def main():
    n,m = map(int, input().split())
    uf = UnionFind(n)
    for i in range(m):
        x, y, z = map(int, input().split())
        x -= 1
        y -= 1
        if not uf.same(x,y):
            uf.union(x,y)
    res = 0
    for i in range(n):
        if uf.par[i] == i:
            res += 1
    print(res)

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
def cutw(s,n):
    t = 0
    for i in range(n):
        if s[i] == '#':
            break
        else:
            t += 1
    s = s[t:]
    n = len(s)
    return s,n

def cutb(s,n):
    t = n
    for i in range(n-1, -1,-1):
        if s[i] == '.':
            break
        else:
            t -= 1
    s = s[:t]
    n = len(s)
    return s,n


if __name__ == '__main__':
    n = int(input())
    s = input()
    res = 0
    s1 = s
    n1 = n
    res1 = 0
    while True:
        s,n = cutw(s,n)
        s,n = cutb(s,n)
        if n>0:
            s = '.'+s[1:]
            res += 1
        else:
            break
    while True:
        s1,n1 = cutw(s1,n1)
        s1,n1 = cutb(s1,n1)
        if n1>0:
            s1 = s1[:n1-1] + '#'
            res1 += 1
        else:
            break
    print(min(res,res1))

Fixed submission:
def main():
    n = int(input())
    s = input()
    res = w = s.count('.')
    b = 0
    for i in range(n):
        if s[i] == '#':
            b += 1
        else:
            w -= 1
        res = min(res,b+w)

    print(res)

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Time Limit Exceeded):
n,q = (int(i) for i in input().split())
s = input()
a = {}
for i in range(n):
    if not s[i] in a:
        a[s[i]] = [i]
    else:
        a[s[i]].append(i)

nums = [1] * n
for i in range(q):
    td = list(input().split())
    t = td[0]
    d = td[1]
    if t in a:
        ids = a[t]
        for id in ids:
            if d == 'L':
                if id == 0:
                    nums[id] = 0
                else:
                    nums[id-1] += nums[id]    
                    nums[id] = 0
            else:
                if id == n-1:
                    nums[id] = 0
                else:
                    nums[id+1] += nums[id]
                    nums[id] = 0

print(sum(nums))

Fixed submission:
n,q = (int(i) for i in input().split())
s = '#'+input()+'#'
l = 0
r = n+1
a = [list(input().split()) for i in range(q)]
for i in range(q-1, -1, -1):
    t,d = a[i]
    if s[l+1] == t and d =='L':
        l += 1
    elif s[l] == t and d == 'R':
        l -= 1
    if s[r] == t and d == 'L':
        r += 1
    elif s[r-1] == t and d == 'R':
        r -= 1
print(max(0,r-l-1))