Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(10**7) #再帰関数の上限,10**5以上の場合python

import random
def input(): 
    x=sys.stdin.readline()
    return x[:-1] if x[-1]=="\n" else x
def printe(*x):print(*x,file=sys.stderr)
def printl(li): _=print(*li, sep="\n") if li else None

def main():
    mod = 1000000007
    #w.sort(key=itemgetter(1),reversed=True)  #二個目の要素で降順並び替え

    D = int(input())
    #N, K = map(int, input().split())
    cs = tuple(map(int, input().split())) #1行ベクトル
    #L = tuple(int(input()) for i in range(N)) #改行ベクトル
    S = tuple(tuple(map(int, input().split())) for i in range(D)) #改行行列
    lss=[]
    ls=[0]*26
    anss=[-1]*D
    for i in range(D):
        s=S[i]
        if i==0:
            msc=-1000000
            ans=-1
            for j in range(26):
                sc=s[j]+cs[j]

                if msc<sc:
                    ans=j
                    msc=sc
            ls[ans]=1
            #lss.append(ls)
            anss[i]=ans+1
            continue
        msc=0
        ans=-1
        dec=[-cs[j]*(i+1-ls[j]) for j in range(26)]
        msc=-10000000
        ans=-1
        for j in range(26):
            sc=s[j]-dec[j]
            if msc<sc:
                ans=j
                msc=sc
        ls[ans]=i+1
        #lss.append(ls)
        anss[i]=ans+1
    
    def eval(anss):
        ls=[0]*26
        score=0
        for i in range(D):
            j=anss[i]-1
            ls[j]=i+1
            score+=S[i][j]
            dec=sum([cs[k]*(i+1-ls[k]) for k in range(26)])
            score-=dec
        return score
    
    def eval2(anss,score,target,val,pval):
        score=score-S[target][pval-1]+S[target][val-1]
        f1=0
        f2=0
        cp=cv=0
        if target>0:
            for i in range(target-1,-1,-1):
                a=anss[i]
                if a==pval and not f1:
                    cp=i
                    f1=1
                if a==val and not f2:
                    cv=i
                    f2=1
                if f1 and f2:
                    break
        f1=f2=0
        #printe(cp,cv)
        csv=cs[val-1]
        csp=cs[pval-1]
        tcv=(target-cv)*csv
        tcp=(target-cp)*csp
        #printe(tcv,tcp)

        score+=tcv-tcp
        for i in range(target+1,D):
            a=anss[i]
            if anss[i]==pval and not f2:
                f2=1
            if anss[i]==val and not f1:
                f1=1
            if not f1:
                score+=tcv
            if not f2:
                score-=tcp
                
            if f1 and f2:
                break

        return score

    csc=eval(anss)
    #nans=copy(anss)

    random.seed(0)
    yaki=0.00
    for _ in range(1500000):
        target=random.randrange(0,D)
        
        pval=anss[target]
        val=pval
        while val==pval:
            val=random.randrange(0,26)+1
        #val=pval
        #nans[target]=val
        nsc=eval2(anss,csc,target,val,pval)
        
        if nsc>csc:
            csc=nsc
            anss[target]=val
        
            #printe(csc)
        #printe(csc,eval(anss))
            
            
            



    printl(anss)
    printe(csc)
    #printe(eval(anss))
    

if __name__ == "__main__":
    main()

Fixed submission:
import sys
sys.setrecursionlimit(10**7) #再帰関数の上限,10**5以上の場合python
import math
from copy import copy, deepcopy
from copy import deepcopy as dcp
from operator import itemgetter
from bisect import bisect_left, bisect, bisect_right#2分探索
#bisect_left(l,x), bisect(l,x)#aはソート済みである必要あり。aの中からx未満の要素数を返す。rightだと以下
from collections import deque
#deque(l), pop(), append(x), popleft(), appendleft(x)
#q.rotate(n)で → にn回ローテート
from collections import Counter#文字列を個数カウント辞書に、
#S=Counter(l),S.most_common(x),S.keys(),S.values(),S.items()
from itertools import accumulate,combinations,permutations#累積和
#list(accumulate(l))
from heapq import heapify,heappop,heappush
#heapify(q),heappush(q,a),heappop(q) #q=heapify(q)としないこと、返り値はNone
#import fractions#古いatcoderコンテストの場合GCDなどはここからimportする
from functools import lru_cache#pypyでもうごく
#@lru_cache(maxsize = None)#maxsizeは保存するデータ数の最大値、2**nが最も高効率
from decimal import Decimal

def input(): 
    x=sys.stdin.readline()
    return x[:-1] if x[-1]=="\n" else x
def printe(x):print(x,file=sys.stderr)
def printl(li): _=print(*li, sep="\n") if li else None
def argsort(s, return_sorted=False): 
    inds=sorted(range(len(s)), key=lambda k: s[k])
    if return_sorted: return inds, [s[i] for i in inds]
    return inds
def alp2num(c,cap=False): return ord(c)-97 if not cap else ord(c)-65
def num2alp(i,cap=False): return chr(i+97) if not cap else chr(i+65)
def matmat(A,B):
    K,N,M=len(B),len(A),len(B[0])
    return [[sum([(A[i][k]*B[k][j]) for k in range(K)]) for j in range(M)] for i in range(N)]
def matvec(M,v):
    N,size=len(v),len(M)
    return [sum([M[i][j]*v[j] for j in range(N)]) for i in range(size)]
def T(M):
    n,m=len(M),len(M[0])
    return [[M[j][i] for j in range(n)] for i in range(m)]
def main():
    mod = 1000000007
    #w.sort(key=itemgetter(1),reversed=True)  #二個目の要素で降順並び替え

    D = int(input())
    #N, K = map(int, input().split())
    cs = tuple(map(int, input().split())) #1行ベクトル
    #L = tuple(int(input()) for i in range(N)) #改行ベクトル
    S = tuple(tuple(map(int, input().split())) for i in range(D)) #改行行列
    ls=[0]*26
    for i in range(D):
        s=S[i]
        if i==0:
            msc=-1000000
            ans=-1
            for j in range(26):
                sc=s[j]+cs[j]
                if msc<sc:
                    ans=j
                msc=sc
            ls[ans]=1

            print(ans+1)
            continue
        msc=0
        ans=-1
        dec=[-cs[j]*(i+1-ls[j]) for j in range(26)]
        msc=-10000000
        ans=-1
        for j in range(26):
            sc=s[j]-dec[j]
            if msc<sc:
                ans=j
            msc=sc
        ls[ans]=i+1
        print(ans+1)



            
                    
            






if __name__ == "__main__":
    main()

Buggy python submission (verdict: Time Limit Exceeded):
import sys
sys.setrecursionlimit(10**7) #再帰関数の上限,10**5以上の場合python

import random
def input(): 
    x=sys.stdin.readline()
    return x[:-1] if x[-1]=="\n" else x
def printe(*x):print(*x,file=sys.stderr)
def printl(li): _=print(*li, sep="\n") if li else None

def main():
    mod = 1000000007
    #w.sort(key=itemgetter(1),reversed=True)  #二個目の要素で降順並び替え

    D = int(input())
    #N, K = map(int, input().split())
    cs = tuple(map(int, input().split())) #1行ベクトル
    #L = tuple(int(input()) for i in range(N)) #改行ベクトル
    S = tuple(tuple(map(int, input().split())) for i in range(D)) #改行行列
    lss=[]
    ls=[0]*26
    anss=[-1]*D
    for i in range(D):
        s=S[i]
        if i==0:
            msc=-1000000
            ans=-1
            for j in range(26):
                sc=s[j]+cs[j]

                if msc<sc:
                    ans=j
                    msc=sc
            ls[ans]=1
            #lss.append(ls)
            anss[i]=ans+1
            continue
        msc=0
        ans=-1
        dec=[-cs[j]*(i+1-ls[j]) for j in range(26)]
        msc=-10000000
        ans=-1
        for j in range(26):
            sc=s[j]-dec[j]
            if msc<sc:
                ans=j
                msc=sc
        ls[ans]=i+1
        #lss.append(ls)
        anss[i]=ans+1
    
    def eval(anss):
        ls=[0]*26
        score=0
        for i in range(D):
            j=anss[i]-1
            ls[j]=i+1
            score+=S[i][j]
            dec=sum([cs[k]*(i+1-ls[k]) for k in range(26)])
            score-=dec
        return score
    
    def eval2(anss,score,target,val,pval):
        score=score-S[target][pval-1]+S[target][val-1]
        f1=0
        f2=0
        cp=cv=0
        if target>0:
            for i in range(target-1,-1,-1):
                a=anss[i]
                if a==pval and not f1:
                    cp=i
                    f1=1
                if a==val and not f2:
                    cv=i
                    f2=1
                if f1 and f2:
                    break
        f1=f2=0
        #printe(cp,cv)
        csv=cs[val-1]
        csp=cs[pval-1]
        tcv=(target-cv)*csv
        tcp=(target-cp)*csp
        #printe(tcv,tcp)

        score+=tcv-tcp
        for i in range(target+1,D):
            a=anss[i]
            if anss[i]==pval and not f2:
                f2=1
            if anss[i]==val and not f1:
                f1=1
            if not f1:
                score+=tcv
            if not f2:
                score-=tcp
                
            if f1 and f2:
                break

        return score

    csc=eval(anss)
    #nans=copy(anss)

    random.seed(0)

    for _ in range(1850000):
        target=random.randrange(0,D)
        
        pval=anss[target]
        val=pval
        while val==pval:
            val=random.randrange(0,26)+1
        #val=pval
        #nans[target]=val
        nsc=eval2(anss,csc,target,val,pval)
        #printe(csc)
        #printe(nsc)
        #printe(csc,nsc,target,val,pval)
        #printe(target,val,pval,anss[201],anss[223])
        if nsc>csc:
            csc=nsc
            anss[target]=val
            #printe(csc)
        #printe(csc,eval(anss))
            
            
            



    printl(anss)
    printe(csc)
    #printe(eval(anss))
    

if __name__ == "__main__":
    main()

Fixed submission:
import sys
sys.setrecursionlimit(10**7) #再帰関数の上限,10**5以上の場合python
import math
from copy import copy, deepcopy
from copy import deepcopy as dcp
from operator import itemgetter
from bisect import bisect_left, bisect, bisect_right#2分探索
#bisect_left(l,x), bisect(l,x)#aはソート済みである必要あり。aの中からx未満の要素数を返す。rightだと以下
from collections import deque
#deque(l), pop(), append(x), popleft(), appendleft(x)
#q.rotate(n)で → にn回ローテート
from collections import Counter#文字列を個数カウント辞書に、
#S=Counter(l),S.most_common(x),S.keys(),S.values(),S.items()
from itertools import accumulate,combinations,permutations#累積和
#list(accumulate(l))
from heapq import heapify,heappop,heappush
#heapify(q),heappush(q,a),heappop(q) #q=heapify(q)としないこと、返り値はNone
#import fractions#古いatcoderコンテストの場合GCDなどはここからimportする
from functools import lru_cache#pypyでもうごく
#@lru_cache(maxsize = None)#maxsizeは保存するデータ数の最大値、2**nが最も高効率
from decimal import Decimal

def input(): 
    x=sys.stdin.readline()
    return x[:-1] if x[-1]=="\n" else x
def printe(x):print(x,file=sys.stderr)
def printl(li): _=print(*li, sep="\n") if li else None
def argsort(s, return_sorted=False): 
    inds=sorted(range(len(s)), key=lambda k: s[k])
    if return_sorted: return inds, [s[i] for i in inds]
    return inds
def alp2num(c,cap=False): return ord(c)-97 if not cap else ord(c)-65
def num2alp(i,cap=False): return chr(i+97) if not cap else chr(i+65)
def matmat(A,B):
    K,N,M=len(B),len(A),len(B[0])
    return [[sum([(A[i][k]*B[k][j]) for k in range(K)]) for j in range(M)] for i in range(N)]
def matvec(M,v):
    N,size=len(v),len(M)
    return [sum([M[i][j]*v[j] for j in range(N)]) for i in range(size)]
def T(M):
    n,m=len(M),len(M[0])
    return [[M[j][i] for j in range(n)] for i in range(m)]
def main():
    mod = 1000000007
    #w.sort(key=itemgetter(1),reversed=True)  #二個目の要素で降順並び替え

    D = int(input())
    #N, K = map(int, input().split())
    cs = tuple(map(int, input().split())) #1行ベクトル
    #L = tuple(int(input()) for i in range(N)) #改行ベクトル
    S = tuple(tuple(map(int, input().split())) for i in range(D)) #改行行列
    ls=[0]*26
    for i in range(D):
        s=S[i]
        if i==0:
            msc=-1000000
            ans=-1
            for j in range(26):
                sc=s[j]+cs[j]
                if msc<sc:
                    ans=j
                msc=sc
            ls[ans]=1

            print(ans+1)
            continue
        msc=0
        ans=-1
        dec=[-cs[j]*(i+1-ls[j]) for j in range(26)]
        msc=-10000000
        ans=-1
        for j in range(26):
            sc=s[j]-dec[j]
            if msc<sc:
                ans=j
            msc=sc
        ls[ans]=i+1
        print(ans+1)



            
                    
            






if __name__ == "__main__":
    main()