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

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

n = int(input())
s = input()

def main():
    md=10**9+7
    dp=[[0]*(n+1) for _ in range(n+1)]
    dp[1][0]=1
    dpx=dp[1]
    for x in range(2,n+1):
        dpx1=dpx
        dpx=dp[x]
        for i in range(x):
            if s[n-x]=="<":
                dpx[i]=sum(dpx1[i:x-1])%md
            else:
                dpx[i]=sum(dpx1[:i])%md
    #p2D(dp)
    print(sum(dp[n])%md)

main()


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])

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

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

n = int(input())
s = input()

def main():
    md=10**9+7
    dp=[[0]*(n+1) for _ in range(n+1)]
    dp[1][0]=1
    dpx=dp[1]
    for x in range(2,n+1):
        dpx1=dpx
        dpx=dp[x]
        for i in range(x):
            dp_value=0
            if s[n-x]=="<":
                for j in range(i,x-1):
                    dp_value+=dpx1[j]
            else:
                for j in range(i):
                    dp_value+=dpx1[j]
            dpx[i]=dp_value%md
    #p2D(dp)
    print(sum(dp[n])%md)

main()


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])

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

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

n = int(input())
s = input()

def main():
    md=10**9+7
    dp=[[0]*(n+1) for _ in range(n+1)]
    dp[1][0]=1
    dpx=dp[1]
    for x in range(2,n+1):
        dpx1=dpx
        dpx=dp[x]
        for i in range(x):
            dp_value=0
            if s[n-x]=="<":
                for j in range(i,x-1):
                    dp_value+=dpx1[j]
            else:
                for j in range(i):
                    dp_value+=dpx1[j]
            dpx[i]=dp_value%md
    #p2D(dp)
    print(sum(dp[n])%md)

main()


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])

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

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

n = int(input())
s = input()
# combinationの準備
md = 10 ** 9 + 7
n_max = 3005
fac = [1]
inv = [1] * (n_max + 1)
k_fac_inv = 1
for i in range(1, n_max + 1):
    k_fac_inv = k_fac_inv * i % md
    fac.append(k_fac_inv)
k_fac_inv = pow(k_fac_inv, md - 2, md)
for i in range(n_max, 1, -1):
    inv[i] = k_fac_inv
    k_fac_inv = k_fac_inv * i % md

def com(com_n, com_r):
    return fac[com_n] * inv[com_r] * inv[com_n - com_r] % md

def main():
    sn=len(s)
    dp=[[1]*sn for _ in range(sn)]
    for w in range(1,sn):
        for l in range(sn-w):
            value=0
            if s[l]=="<":value+=dp[l+1][l+w]
            if s[l+w]==">":value+=dp[l][l+w-1]
            for i in range(l,l+w):
                if s[i]==">" and s[i+1]=="<":
                    value+=dp[l][max(i-1,l)]*dp[min(i+2,l+w)][l+w]*com(w+1,i-l+1)
            dp[l][l+w]=value%md
    #p2D(dp)
    print(dp[0][-1])

main()


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])

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

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

n = int(input())
s = input()
# combinationの準備
md = 10 ** 9 + 7
n_max = 3005
fac = [1]
inv = [1] * (n_max + 1)
k_fac_inv = 1
for i in range(1, n_max + 1):
    k_fac_inv = k_fac_inv * i % md
    fac.append(k_fac_inv)
k_fac_inv = pow(k_fac_inv, md - 2, md)
for i in range(n_max, 1, -1):
    inv[i] = k_fac_inv
    k_fac_inv = k_fac_inv * i % md

def com(com_n, com_r):
    return fac[com_n] * inv[com_r] * inv[com_n - com_r] % md

def way(a):
    an = len(a)
    if an <= 1: return 1
    if a in memo: return memo[a]
    res = 0
    if a[0]: res += way(a[1:])
    if not a[-1]: res += way(a[:-1])
    for i in range(an - 1):
        if not a[i] and a[i + 1]:
            res += way(a[:i]) * way(a[i + 2:]) * com(an, i + 1)
    res %= md
    memo[a] = res
    return res
memo = {}

def main():
    a = [c == "<" for c in s]
    a=tuple(a)
    print(way(a))

main()


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])

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

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

n = int(input())
s = input()
# combinationの準備
md = 10 ** 9 + 7
n_max = 3005
fac = [1]
inv = [1] * (n_max + 1)
k_fac_inv = 1
for i in range(1, n_max + 1):
    k_fac_inv = k_fac_inv * i % md
    fac.append(k_fac_inv)
k_fac_inv = pow(k_fac_inv, md - 2, md)
for i in range(n_max, 1, -1):
    inv[i] = k_fac_inv
    k_fac_inv = k_fac_inv * i % md

def com(com_n, com_r):
    return fac[com_n] * inv[com_r] * inv[com_n - com_r] % md

def way(s):
    sn = len(s)
    if sn <= 1: return 1
    if s in memo: return memo[s]
    res = 0
    if s[0] == "<": res += way(s[1:])
    if s[-1] == ">": res += way(s[:-1])
    for i in range(sn - 1):
        if s[i] == ">" and s[i + 1] == "<":
            res += way(s[:i]) * way(s[i + 2:]) * com(sn, i + 1)
    res %= md
    memo[s] = res
    return res
memo = {}

def main():
    print(way(s))

main()


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])

Buggy python submission (verdict: Runtime Error):
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        s = dp[0]
        for dpi in range(1, n - i - 1):
            dp[dpi] = s = (dp[dpi] + s) % md
        dp = dp[:-1]
    else:
        s = dp[-1]
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = s = (dp[dpi] + s) % md
        dp = dp[1:]
print(dp[0])


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])

Buggy python submission (verdict: Runtime Error):
def cnt(i, p, ns):
    if i == n - 1:
        return 1
    t = (p, ns)
    if t in memo:
        return memo[t]
    re = 0
    if s[i] == "<":
        st, ed = p + 1, n
    else:
        st, ed = 0, p
    for k in range(st, ed):
        if ns & (1 << k):
            re += cnt(i + 1, k, ns - (1 << k))
    memo[t] = re = re % md
    return re


memo = {}
md = 10 ** 9 + 7
n = int(input())
s = input()
ans = 0
for p in range(n):
    ans += cnt(0, p, ((1 << n) - 1) - (1 << p))
print(ans % md)


Fixed submission:
md = 10 ** 9 + 7
n = int(input())
s = input()
dp = [1] * n
for i in range(n - 1):
    if s[i] == "<":
        for dpi in range(1, n - i - 1):
            dp[dpi] = (dp[dpi] + dp[dpi - 1]) % md
        dp = dp[:-1]
    else:
        for dpi in range(n - i - 2, 0, -1):
            dp[dpi] = (dp[dpi] + dp[dpi + 1]) % md
        dp = dp[1:]
print(dp[0])