Buggy python submission (verdict: Time Limit Exceeded):
import sys
# input処理を高速化する
input = sys.stdin.readline
# 入力
S = input()
T = input()

def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = dp[i][j] + 1
            else:
                if dp[i][j+1] > dp[i+1][j]:
                    dp[i+1][j+1] = dp[i][j+1]
                else:
                    dp[i+1][j+1] = dp[i+1][j]

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])
        
lcs(S, T)

Fixed submission:
import sys

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def chmax(a, b):
    if a >= b:
        return a
    else:
        return b


def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j] + 1)
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i+1][j])
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j+1])

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

        
lcs(S, T)

Buggy python submission (verdict: Time Limit Exceeded):
import sys
# input処理を高速化する
input = sys.stdin.readline
# 入力
S = input()
T = input()

def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = dp[i][j] + 1
            else:
                dp[i+1][j+1] = max(dp[i][j+1], dp[i+1][j])

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])
        
lcs(S, T)

Fixed submission:
import sys

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def chmax(a, b):
    if a >= b:
        return a
    else:
        return b


def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j] + 1)
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i+1][j])
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j+1])

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

        
lcs(S, T)

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

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def lcs(s, t):
    dp = np.zeros((len(S)+1, len(T)+1), dtype=int)

    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = dp[i][j] + 1
            else:
                dp[i+1][j+1] = np.maximum(dp[i+1][j], dp[i][j+1])
    
    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

lcs(S, T)

Fixed submission:
import sys

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def chmax(a, b):
    if a >= b:
        return a
    else:
        return b


def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j] + 1)
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i+1][j])
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j+1])

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

        
lcs(S, T)

Buggy python submission (verdict: Runtime Error):
import sys
import numpy as np

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def lcs(s, t):
    dp = np.zeros((len(S)+1, len(T)+1), dtype=int)

    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = dp[i][j] + 1
            else:
                dp[i+1][j+1] = np.maximum(dp[i+1][j], dp[i][j+1])
    
    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

Fixed submission:
import sys

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def chmax(a, b):
    if a >= b:
        return a
    else:
        return b


def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j] + 1)
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i+1][j])
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j+1])

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

        
lcs(S, T)

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

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def chmax(a, b):
    if a >= b:
        return a
    else:
        return b


def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j] + 1)
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i+1][j])
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j+1])

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

        
lcs(S, T)



Fixed submission:
import sys

# input処理を高速化する
input = sys.stdin.readline

# 入力
S = input()
T = input()

def chmax(a, b):
    if a >= b:
        return a
    else:
        return b


def lcs(s, t):
    dp = [[0 for i in range(len(T)+1)] for j in range(len(S)+1)]
    for i in range(len(S)):
        for j in range(len(T)):
            if S[i] == T[j]:
                dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j] + 1)
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i+1][j])
            dp[i+1][j+1] = chmax(dp[i+1][j+1], dp[i][j+1])

    ans = ''
    i = len(S)
    j = len(T)
    while (i>0  and j>0):
        if dp[i][j] == dp[i-1][j]:
            i -= 1
        elif dp[i][j] == dp[i][j-1]:
            j -= 1
        else:
            ans += s[i-1] 
            i -= 1
            j -= 1
    
    print(ans[::-1])

        
lcs(S, T)