CODE FESTIVAL 2016 Final

Submission #1152881

Source codeソースコード

#include <bits/stdc++.h>
using namespace std;

const long long INF = 1E18 + 10;

long long n, a;

bool check(long long u, int len) {
  if(u < len) return false;
  long long tp = u / len, tmp = 1;
  for (int i = 1; i <= len; i++) {
    if (i <= u % len) {
      if (INF / tmp < tp + 1) return true;
      tmp *= (tp + 1);
    } else {
      if (INF / tmp < tp) return true;
      tmp *= tp;
    }
  }
  return tmp >= n;
}

int main() {
  cin >> n >> a;
  long long ans = INF;
  for (int i = 1; i <= 44; i++) {
    long long l = 1, r = INF, md;
    for (int cs = 0; cs < 66; cs++) {
      md = (l + r) >> 1;
      if (check(md, i)) r = md;
      else l = md + 1;
    }
    ans = min(ans, md + a * (i - 1));
  }
  cout << ans << endl;
  return 0;
}

Submission

Task問題 E - Cookies
User nameユーザ名 cornw
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 AC
Score得点 1000
Source lengthソースコード長 783 Byte
File nameファイル名
Exec time実行時間 2 ms
Memory usageメモリ使用量 256 KB

Test case

Set

Set name Score得点 / Max score Cases
sample - sample-01.txt,sample-02.txt,sample-03.txt
dataset1 500 / 500 sample-01.txt,01-01.txt,01-02.txt,01-03.txt,01-04.txt,01-05.txt,01-06.txt,01-07.txt,01-08.txt,01-09.txt,01-10.txt,01-11.txt,01-12.txt,01-13.txt,01-14.txt,01-15.txt,01-16.txt,01-17.txt,01-18.txt,01-19.txt,01-20.txt,01-21.txt,01-22.txt,01-23.txt,01-24.txt,01-25.txt,01-26.txt
dataset2 500 / 500 sample-01.txt,sample-02.txt,sample-03.txt,01-01.txt,01-02.txt,01-03.txt,01-04.txt,01-05.txt,01-06.txt,01-07.txt,01-08.txt,01-09.txt,01-10.txt,01-11.txt,01-12.txt,01-13.txt,01-14.txt,01-15.txt,01-16.txt,01-17.txt,01-18.txt,01-19.txt,01-20.txt,01-21.txt,01-22.txt,01-23.txt,01-24.txt,01-25.txt,01-26.txt,02-01.txt,02-02.txt,02-03.txt,02-04.txt,02-05.txt,02-06.txt,02-07.txt,02-08.txt,02-09.txt,02-10.txt,02-11.txt,02-12.txt,02-13.txt,02-14.txt,02-15.txt,02-16.txt,02-17.txt,02-18.txt,02-19.txt,02-20.txt,02-21.txt,02-22.txt,02-23.txt,02-24.txt,02-25.txt,02-26.txt,02-27.txt,02-28.txt,02-29.txt,02-30.txt,02-31.txt,02-32.txt,02-33.txt,02-34.txt,02-35.txt,02-36.txt,02-37.txt,02-38.txt,02-39.txt,02-40.txt,sample-01.txt,sample-02.txt,sample-03.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
01-01.txt AC 2 ms 256 KB
01-02.txt AC 2 ms 256 KB
01-03.txt AC 2 ms 256 KB
01-04.txt AC 2 ms 256 KB
01-05.txt AC 2 ms 256 KB
01-06.txt AC 2 ms 256 KB
01-07.txt AC 2 ms 256 KB
01-08.txt AC 2 ms 256 KB
01-09.txt AC 2 ms 256 KB
01-10.txt AC 2 ms 256 KB
01-11.txt AC 2 ms 256 KB
01-12.txt AC 2 ms 256 KB
01-13.txt AC 2 ms 256 KB
01-14.txt AC 2 ms 256 KB
01-15.txt AC 2 ms 256 KB
01-16.txt AC 2 ms 256 KB
01-17.txt AC 2 ms 256 KB
01-18.txt AC 2 ms 256 KB
01-19.txt AC 2 ms 256 KB
01-20.txt AC 1 ms 256 KB
01-21.txt AC 2 ms 256 KB
01-22.txt AC 2 ms 256 KB
01-23.txt AC 2 ms 256 KB
01-24.txt AC 2 ms 256 KB
01-25.txt AC 2 ms 256 KB
01-26.txt AC 2 ms 256 KB
02-01.txt AC 2 ms 256 KB
02-02.txt AC 2 ms 256 KB
02-03.txt AC 2 ms 256 KB
02-04.txt AC 2 ms 256 KB
02-05.txt AC 2 ms 256 KB
02-06.txt AC 2 ms 256 KB
02-07.txt AC 2 ms 256 KB
02-08.txt AC 2 ms 256 KB
02-09.txt AC 2 ms 256 KB
02-10.txt AC 2 ms 256 KB
02-11.txt AC 2 ms 256 KB
02-12.txt AC 2 ms 256 KB
02-13.txt AC 2 ms 256 KB
02-14.txt AC 2 ms 256 KB
02-15.txt AC 2 ms 256 KB
02-16.txt AC 2 ms 256 KB
02-17.txt AC 2 ms 256 KB
02-18.txt AC 2 ms 256 KB
02-19.txt AC 2 ms 256 KB
02-20.txt AC 2 ms 256 KB
02-21.txt AC 2 ms 256 KB
02-22.txt AC 2 ms 256 KB
02-23.txt AC 2 ms 256 KB
02-24.txt AC 2 ms 256 KB
02-25.txt AC 2 ms 256 KB
02-26.txt AC 2 ms 256 KB
02-27.txt AC 2 ms 256 KB
02-28.txt AC 2 ms 256 KB
02-29.txt AC 2 ms 256 KB
02-30.txt AC 2 ms 256 KB
02-31.txt AC 2 ms 256 KB
02-32.txt AC 2 ms 256 KB
02-33.txt AC 2 ms 256 KB
02-34.txt AC 2 ms 256 KB
02-35.txt AC 2 ms 256 KB
02-36.txt AC 2 ms 256 KB
02-37.txt AC 2 ms 256 KB
02-38.txt AC 2 ms 256 KB
02-39.txt AC 2 ms 256 KB
02-40.txt AC 2 ms 256 KB
sample-01.txt AC 2 ms 256 KB
sample-02.txt AC 2 ms 256 KB
sample-03.txt AC 2 ms 256 KB