CODE FESTIVAL 2016 Final

Submission #993865

Source codeソースコード

#include <cstdio>
#include <cassert>
#include <algorithm>
#include <set>
using namespace std;

typedef long long llong;

llong inf = 1e14;

inline llong pw(llong x, int b) {
    llong res = 1;
    for (int i = 0; i < b; i++) {
        if (res >= inf / x)
            res = inf;
        else
            res *= x;
    }
    return res;
}

inline llong minsum(llong n, int k) {
    llong a = 1, b = n + 1;
    while (b - a > 1) {
        llong m = (a + b) / 2;
        if (pw(m, k) <= n)
            a = m;
        else
            b = m;
    }
    for (int i = 0; i <= k; i++) {
        llong vala = pw(a, k - i);
        llong valb = pw(b, i);
        llong val = (vala >= inf / valb) ? inf : vala * valb;
        if (val >= n)
            return (k - i) * a + i * b;
    }
    assert(false);
    return -1;
}

int main() {
    llong n, a;
    scanf("%lld %lld", &n, &a);
    llong ans = inf;
    for (int k = 1; k <= 50; k++) {
        ans = min(ans, (k - 1) * a + minsum(n, k));
    }
    printf("%lld\n", ans);
}

Submission

Task問題 E - Cookies
User nameユーザ名 Zlobober
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 1066 Byte
File nameファイル名
Exec time実行時間 1 ms
Memory usageメモリ使用量 128 KB

Compiler messageコンパイルメッセージ

./Main.cpp: In function ‘int main()’:
./Main.cpp:44:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
scanf("%lld %lld", &n, &a);
^

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

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 1 ms 128 KB
01-02.txt AC 1 ms 128 KB
01-03.txt AC 1 ms 128 KB
01-04.txt AC 1 ms 128 KB
01-05.txt AC 1 ms 128 KB
01-06.txt AC 1 ms 128 KB
01-07.txt AC 1 ms 128 KB
01-08.txt AC 1 ms 128 KB
01-09.txt AC 1 ms 128 KB
01-10.txt AC 1 ms 128 KB
01-11.txt AC 1 ms 128 KB
01-12.txt AC 1 ms 128 KB
01-13.txt AC 1 ms 128 KB
01-14.txt AC 1 ms 128 KB
01-15.txt AC 1 ms 128 KB
01-16.txt AC 1 ms 128 KB
01-17.txt AC 1 ms 128 KB
01-18.txt AC 1 ms 128 KB
01-19.txt AC 1 ms 128 KB
01-20.txt AC 1 ms 128 KB
01-21.txt AC 1 ms 128 KB
01-22.txt AC 1 ms 128 KB
01-23.txt AC 1 ms 128 KB
01-24.txt AC 1 ms 128 KB
01-25.txt AC 1 ms 128 KB
01-26.txt AC 1 ms 128 KB
02-01.txt AC 1 ms 128 KB
02-02.txt AC 1 ms 128 KB
02-03.txt AC 1 ms 128 KB
02-04.txt AC 1 ms 128 KB
02-05.txt AC 1 ms 128 KB
02-06.txt AC 1 ms 128 KB
02-07.txt AC 1 ms 128 KB
02-08.txt AC 1 ms 128 KB
02-09.txt AC 1 ms 128 KB
02-10.txt AC 1 ms 128 KB
02-11.txt AC 1 ms 128 KB
02-12.txt AC 1 ms 128 KB
02-13.txt AC 1 ms 128 KB
02-14.txt AC 1 ms 128 KB
02-15.txt AC 1 ms 128 KB
02-16.txt AC 1 ms 128 KB
02-17.txt AC 1 ms 128 KB
02-18.txt AC 1 ms 128 KB
02-19.txt AC 1 ms 128 KB
02-20.txt AC 1 ms 128 KB
02-21.txt AC 1 ms 128 KB
02-22.txt AC 1 ms 128 KB
02-23.txt AC 1 ms 128 KB
02-24.txt AC 1 ms 128 KB
02-25.txt AC 1 ms 128 KB
02-26.txt AC 1 ms 128 KB
02-27.txt AC 1 ms 128 KB
02-28.txt AC 1 ms 128 KB
02-29.txt AC 1 ms 128 KB
02-30.txt AC 1 ms 128 KB
02-31.txt AC 1 ms 128 KB
02-32.txt AC 1 ms 128 KB
02-33.txt AC 1 ms 128 KB
02-34.txt AC 1 ms 128 KB
02-35.txt AC 1 ms 128 KB
02-36.txt AC 1 ms 128 KB
02-37.txt AC 1 ms 128 KB
02-38.txt AC 1 ms 128 KB
02-39.txt AC 1 ms 128 KB
02-40.txt AC 1 ms 128 KB
sample-01.txt AC 1 ms 128 KB
sample-02.txt AC 1 ms 128 KB
sample-03.txt AC 1 ms 128 KB