BOJ - 1654 - 랜선 자르기

import sys
def solution():
    line = []
    K, N = map(int, sys.stdin.readline().split())

    for _ in range(K):
        line.append(int(input()))

    low = 1
    plus = 0
    ret = 0
    high = max(line)

    while low <= high:
        mid = (low + high) // 2
        for i in line:
            plus += i // mid

        if plus >= N:
            low = mid + 1
            ret = mid
            plus = 0
        else:
            high = mid - 1
            plus = 0

    print(ret)

solution()

https://www.acmicpc.net/problem/1654