Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v

dp = [[1] * n + [0] for _ in range(2)]
for i in reversed(range(n - 1)):
    for j in range(n - 1):
        dp[1][j + 1] = mod(dp[1][j + 1] + dp[1][j])
        dp[0][j] = dp[1][j]
    dp[0][-2] = dp[1][-2]
    # print(dp[0])

    for zk in range(n):
        cnt = 0

        if s[i] == "<":
            cnt = dp[0][zk - 1]
        else:
            zj = n - i - zk - 1
            cnt = dp[0][zk + zj - 1] - dp[0][zk - 1]
        dp[1][zk] = cnt

print(sum(dp[1]) % M)


Fixed submission:
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v


dp = [[1] * n + [0] for _ in range(2)]
s = [v == "<" for v in s]
for i in reversed(range(n - 1)):
    for j in range(n - 1):
        dp[1][j + 1] = dp[1][j + 1] + dp[1][j]
        dp[0][j] = dp[1][j]
    dp[0][-2] = dp[1][-2]

    for zk in range(n - i):
        cnt = 0

        if s[i]:
            cnt = dp[0][zk - 1]
        else:
            zj = n - i - zk - 1
            cnt = dp[0][zk + zj - 1] - dp[0][zk - 1]
        dp[1][zk] = mod(cnt)

print(sum(dp[1]) % M)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v

dp = [[None] * n for _ in range(n)]
def dfs(zk, i=0):
    if dp[zk][i] is not None:
        return dp[zk][i]

    if i == n - 1:
        dp[zk][i] = 1
        return 1

    zj = n - i - zk - 1
    cnt = 0

    if s[i] == "<":
        for v in range(zk):
            cnt += dfs(v, i + 1)
    else:
        for v in range(zj):
            cnt += dfs(zk + v, i + 1)
    dp[zk][i] = cnt
    return cnt

def cumsum(array):
    array = array[:]
    for i in range(len(array) - 1):
        array[i + 1] = mod(array[i + 1] + array[i])
    array.append(0)
    return array

for i in reversed(range(n)):
    for zk in range(n):
        if i == n - 1:
            dp[i][zk] = 1
            continue

        zj = n - i - zk - 1
        cnt = 0

        if s[i] == "<":
            # for v in range(zk):
            #     # cnt = mod(cnt + dp[i + 1][v])
            cnt = cs[zk - 1]
        else:
            # for v in range(zj):
            #     # cnt = mod(cnt + dp[i + 1][zk + v])
            cnt = cs[zk + zj - 1] - cs[zk - 1]
        dp[i][zk] = cnt
    cs = cumsum(dp[i])

print(sum(dp[0]) % M)


Fixed submission:
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v


dp = [[1] * n + [0] for _ in range(2)]
s = [v == "<" for v in s]
for i in reversed(range(n - 1)):
    for j in range(n - 1):
        dp[1][j + 1] = dp[1][j + 1] + dp[1][j]
        dp[0][j] = dp[1][j]
    dp[0][-2] = dp[1][-2]

    for zk in range(n - i):
        cnt = 0

        if s[i]:
            cnt = dp[0][zk - 1]
        else:
            zj = n - i - zk - 1
            cnt = dp[0][zk + zj - 1] - dp[0][zk - 1]
        dp[1][zk] = mod(cnt)

print(sum(dp[1]) % M)

Buggy python submission (verdict: Runtime Error):
n = int(input())
s = input()
M = 10**9 + 7

dp = [[None] * n for _ in range(n)]
def dfs(zk, i=0):
    if dp[zk][i] is not None:
        return dp[zk][i]

    if i == n - 1:
        dp[zk][i] = 1
        return 1

    zj = n - i - zk - 1
    cnt = 0

    if s[i] == "<":
        for v in range(zk):
            cnt += dfs(v, i + 1)
    else:
        for v in range(zj):
            cnt += dfs(zk + v, i + 1)
    dp[zk][i] = cnt
    return cnt

def mod(v):
    if v >= M:
        return v % M
    return v

def cumsum(array):
    array = array[:]
    for i in range(len(array) - 1):
        array[i + 1] = mod(array[i + 1] + array[i])
    return array + [0]

for i in reversed(range(n)):
    for zk in range(n):
        if i == n - 1:
            dp[i][zk] = 1
            continue

        zj = n - i - zk - 1
        cnt = 0

        if s[i] == "<":
                # cnt = mod(cnt + dp[i + 1][v])
                cnt = cs[v]
        else:
                # cnt = mod(cnt + dp[i + 1][zk + v])
                cnt = cs[zk + zj - 1] - cs[zk - 1]
        dp[i][zk] = cnt
    cs = cumsum(dp[i])

# for i in range(n):
#     print(dfs(i))
# print(sum(dfs(i) for i in range(n - 1)) % M)
print(sum(dp[0]) % M)


Fixed submission:
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v


dp = [[1] * n + [0] for _ in range(2)]
s = [v == "<" for v in s]
for i in reversed(range(n - 1)):
    for j in range(n - 1):
        dp[1][j + 1] = dp[1][j + 1] + dp[1][j]
        dp[0][j] = dp[1][j]
    dp[0][-2] = dp[1][-2]

    for zk in range(n - i):
        cnt = 0

        if s[i]:
            cnt = dp[0][zk - 1]
        else:
            zj = n - i - zk - 1
            cnt = dp[0][zk + zj - 1] - dp[0][zk - 1]
        dp[1][zk] = mod(cnt)

print(sum(dp[1]) % M)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
s = input()
M = 10**9 + 7

dp = [[None] * n for _ in range(n)]
def dfs(zk, i=0):
    if dp[zk][i] is not None:
        return dp[zk][i]

    if i == n - 1:
        dp[zk][i] = 1
        return 1

    zj = n - i - zk - 1
    cnt = 0

    if s[i] == "<":
        for v in range(zk):
            cnt += dfs(v, i + 1)
    else:
        for v in range(zj):
            cnt += dfs(zk + v, i + 1)
    dp[zk][i] = cnt
    return cnt

def mod(v):
    if v >= M:
        return v % M
    return v

def cumsum(array):
    array = array[:]
    for i in range(len(array) - 1):
        array[i + 1] = mod(array[i + 1] + array[i])
    return array + [0]

for i in reversed(range(n)):
    for zk in range(n):
        if i == n - 1:
            dp[i][zk] = 1
            continue

        zj = n - i - zk - 1
        cnt = 0

        if s[i] == "<":
            for v in range(zk):
                # cnt = mod(cnt + dp[i + 1][v])
                cnt = cs[v]
        else:
            for v in range(zj):
                # cnt = mod(cnt + dp[i + 1][zk + v])
                cnt = cs[zk + zj - 1] - cs[zk - 1]
        dp[i][zk] = cnt
    cs = cumsum(dp[i])

# for i in range(n):
#     print(dfs(i))
# print(sum(dfs(i) for i in range(n - 1)) % M)
print(sum(dp[0]) % M)


Fixed submission:
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v


dp = [[1] * n + [0] for _ in range(2)]
s = [v == "<" for v in s]
for i in reversed(range(n - 1)):
    for j in range(n - 1):
        dp[1][j + 1] = dp[1][j + 1] + dp[1][j]
        dp[0][j] = dp[1][j]
    dp[0][-2] = dp[1][-2]

    for zk in range(n - i):
        cnt = 0

        if s[i]:
            cnt = dp[0][zk - 1]
        else:
            zj = n - i - zk - 1
            cnt = dp[0][zk + zj - 1] - dp[0][zk - 1]
        dp[1][zk] = mod(cnt)

print(sum(dp[1]) % M)

Buggy python submission (verdict: Runtime Error):
n = int(input())
s = input()
M = 10**9 + 7

dp = [[None] * n for _ in range(n)]
def dfs(zk, i=0):
    if dp[zk][i] is not None:
        return dp[zk][i]

    if i == n - 1:
        dp[zk][i] = 1
        return 1

    zj = n - i - zk - 1
    cnt = 0

    if s[i] == "<":
        for v in range(zk):
            cnt += dfs(v, i + 1)
    else:
        for v in range(zj):
            cnt += dfs(zk + v, i + 1)
    dp[zk][i] = cnt
    return cnt

def mod(v):
    if v >= M:
        return v % M
    return v

def cumsum(array):
    array = array.copy()
    for i in range(len(array) - 1):
        array[i + 1] = mod(array[i + 1] + array[i])
    return array + [0]

for i in reversed(range(n)):
    for zk in range(n):
        if i == n - 1:
            dp[i][zk] = 1
            continue

        zj = n - i - zk - 1
        cnt = 0

        if s[i] == "<":
            for v in range(zk):
                # cnt = mod(cnt + dp[i + 1][v])
                cnt = cs[v]
        else:
            for v in range(zj):
                # cnt = mod(cnt + dp[i + 1][zk + v])
                cnt = cs[zk + zj - 1] - cs[zk - 1]
        dp[i][zk] = cnt
    cs = cumsum(dp[i])

# for i in range(n):
#     print(dfs(i))
# print(sum(dfs(i) for i in range(n - 1)) % M)
print(sum(dp[0]) % M)


Fixed submission:
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v


dp = [[1] * n + [0] for _ in range(2)]
s = [v == "<" for v in s]
for i in reversed(range(n - 1)):
    for j in range(n - 1):
        dp[1][j + 1] = dp[1][j + 1] + dp[1][j]
        dp[0][j] = dp[1][j]
    dp[0][-2] = dp[1][-2]

    for zk in range(n - i):
        cnt = 0

        if s[i]:
            cnt = dp[0][zk - 1]
        else:
            zj = n - i - zk - 1
            cnt = dp[0][zk + zj - 1] - dp[0][zk - 1]
        dp[1][zk] = mod(cnt)

print(sum(dp[1]) % M)

Buggy python submission (verdict: Time Limit Exceeded):
n = int(input())
s = input()
M = 10**9 + 7

dp = [[None] * n for _ in range(n)]
def dfs(zk, i=0):
    if dp[zk][i] is not None:
        return dp[zk][i]

    if i == n - 1:
        dp[zk][i] = 1
        return 1

    zj = n - i - zk - 1
    cnt = 0

    if s[i] == "<":
        for v in range(zk):
            cnt += dfs(v, i + 1)
    else:
        for v in range(zj):
            cnt += dfs(zk + v, i + 1)
    dp[zk][i] = cnt
    return cnt

def mod(v):
    if v >= M:
        return v % M
    return v

for zk in range(n):
    for i in reversed(range(n)):
        if i == n - 1:
            dp[zk][i] = 1
            continue

        zj = n - i - zk - 1
        cnt = 0

        if s[i] == "<":
            for v in range(zk):
                cnt = mod(cnt + dfs(v, i + 1))
        else:
            for v in range(zj):
                cnt = mod(cnt + dfs(zk + v, i + 1))
        dp[zk][i] = cnt

# for i in range(n):
#     print(dfs(i))
# print(sum(dfs(i) for i in range(n - 1)) % M)
print(sum([dp[v][0] for v in range(n)]) % M)


Fixed submission:
n = int(input())
s = input()
M = 10**9 + 7

def mod(v):
    if v >= M:
        return v % M
    return v


dp = [[1] * n + [0] for _ in range(2)]
s = [v == "<" for v in s]
for i in reversed(range(n - 1)):
    for j in range(n - 1):
        dp[1][j + 1] = dp[1][j + 1] + dp[1][j]
        dp[0][j] = dp[1][j]
    dp[0][-2] = dp[1][-2]

    for zk in range(n - i):
        cnt = 0

        if s[i]:
            cnt = dp[0][zk - 1]
        else:
            zj = n - i - zk - 1
            cnt = dp[0][zk + zj - 1] - dp[0][zk - 1]
        dp[1][zk] = mod(cnt)

print(sum(dp[1]) % M)