Submission #993865


Source Code Expand

#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 Info

Submission Time
Task E - Cookies
User Zlobober
Language C++14 (GCC 5.4.1)
Score 1000
Code Size 1066 Byte
Status AC
Exec Time 1 ms
Memory 128 KB

Compile Error

./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);
                               ^

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 500 / 500 500 / 500
Status
AC × 3
AC × 27
AC × 69
Set Name Test Cases
sample sample-01.txt, sample-02.txt, sample-03.txt
dataset1 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 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
Case Name Status Exec Time Memory
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