Submission #3013834

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Source Code Expand

# -*- coding: utf-8 -*-
import bisect
import heapq
import math
import random
import sys
from collections import Counter, defaultdict, deque
from decimal import ROUND_CEILING, ROUND_HALF_UP, Decimal
from functools import lru_cache, reduce
from itertools import combinations, combinations_with_replacement, product, permutations
from operator import add, mul, sub

sys.setrecursionlimit(10000)


def read_int():
    return int(input())


def read_int_n():
    return list(map(int, input().split()))


def read_float():
    return float(input())


def read_float_n():
    return list(map(float, input().split()))


def read_str():
    return input().strip()


def read_str_n():
    return list(map(str, input().split()))


def error_print(*args):
    print(*args, file=sys.stderr)


def mt(f):
    import time

    def wrap(*args, **kwargs):
        s = time.time()
        ret = f(*args, **kwargs)
        e = time.time()

        error_print(e - s, 'sec')
        return ret

    return wrap


@mt
def slv(N, X, A):

    r = 0
    for i in range(N):
        c = (sys.maxsize, -1)
        for j in range(N):
            c = min(c, (A[i-j] + j*X, j), key=lambda x: x[0])
        r = max(r, c[1])

    ans = 0
    for i in range(N):
        c = (sys.maxsize, -1)
        for j in range(r+1):
            c = min(c, (A[i-j], j), key=lambda x: x[0])
        ans += A[i-c[1]]

    ans += r*X
    return ans


def main():
    N, X = read_int_n()
    A = read_int_n()
    print(slv(N, X, A))


if __name__ == '__main__':
    main()

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