Contest Duration: ~ (local time) (180 minutes)

Submission #992635

Source Code Expand

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#include <cstdio>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <cstring>
#include <string>
#include <cmath>
#include <cstdlib>
#include <iostream>

using namespace std;

#define MOD @
#define ADD(X,Y) ((X) = ((X) + (Y)) % MOD)
typedef long long i64; typedef vector<int> ivec; typedef vector<string> svec;

i64 N, A;

const i64 INFT = 100000000000000LL;

i64 mult(i64 a, i64 b)
{
if (a == 0) return 0;
if (INFT / a < b) return INFT;
return a * b;
}

i64 getmax(i64 T, int S)
{
i64 ans = 1;
for (int i = 0; i < S; ++i) {
ans = mult(ans, T / S + (i < T % S ? 1 : 0));
}
//	printf("%lld %d %lld\n", T, S, ans);
return ans;
}

int main()
{
scanf("%lld%lld", &N, &A);

i64 ret = N;
for (int i = 1; i <= 40; ++i) {
i64 left = i, right = N;
while (left < right) {
i64 mid = (left + right) / 2;
if (getmax(mid, i) >= N) {
right = mid;
} else
{
left = mid + 1;
}
}
ret = min(ret, A * (i - 1) + left);
}

printf("%lld\n", ret);
return 0;
}

#### Submission Info

Submission Time 2016-11-26 13:10:46+0900 E - Cookies semiexp C++14 (GCC 5.4.1) 1000 1104 Byte AC 3 ms 256 KB

#### Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:43:27: 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 Score / Max Score Test Cases
sample 0 / 0 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
Case Name Status Exec Time Memory
01-01.txt 3 ms 256 KB
01-02.txt 3 ms 256 KB
01-03.txt 3 ms 256 KB
01-04.txt 3 ms 256 KB
01-05.txt 3 ms 256 KB
01-06.txt 3 ms 256 KB
01-07.txt 3 ms 256 KB
01-08.txt 3 ms 256 KB
01-09.txt 3 ms 256 KB
01-10.txt 3 ms 256 KB
01-11.txt 3 ms 256 KB
01-12.txt 3 ms 256 KB
01-13.txt 3 ms 256 KB
01-14.txt 3 ms 256 KB
01-15.txt 3 ms 256 KB
01-16.txt 3 ms 256 KB
01-17.txt 3 ms 256 KB
01-18.txt 3 ms 256 KB
01-19.txt 3 ms 256 KB
01-20.txt 3 ms 256 KB
01-21.txt 3 ms 256 KB
01-22.txt 3 ms 256 KB
01-23.txt 3 ms 256 KB
01-24.txt 3 ms 256 KB
01-25.txt 3 ms 256 KB
01-26.txt 3 ms 256 KB
02-01.txt 3 ms 256 KB
02-02.txt 3 ms 256 KB
02-03.txt 3 ms 256 KB
02-04.txt 3 ms 256 KB
02-05.txt 3 ms 256 KB
02-06.txt 3 ms 256 KB
02-07.txt 3 ms 256 KB
02-08.txt 3 ms 256 KB
02-09.txt 3 ms 256 KB
02-10.txt 3 ms 256 KB
02-11.txt 3 ms 256 KB
02-12.txt 3 ms 256 KB
02-13.txt 3 ms 256 KB
02-14.txt 3 ms 256 KB
02-15.txt 3 ms 256 KB
02-16.txt 3 ms 256 KB
02-17.txt 3 ms 256 KB
02-18.txt 3 ms 256 KB
02-19.txt 3 ms 256 KB
02-20.txt 3 ms 256 KB
02-21.txt 3 ms 256 KB
02-22.txt 3 ms 256 KB
02-23.txt 3 ms 256 KB
02-24.txt 3 ms 256 KB
02-25.txt 3 ms 256 KB
02-26.txt 3 ms 256 KB
02-27.txt 3 ms 256 KB
02-28.txt 3 ms 256 KB
02-29.txt 3 ms 256 KB
02-30.txt 3 ms 256 KB
02-31.txt 3 ms 256 KB
02-32.txt 3 ms 256 KB
02-33.txt 3 ms 256 KB
02-34.txt 3 ms 256 KB
02-35.txt 3 ms 256 KB
02-36.txt 3 ms 256 KB
02-37.txt 3 ms 256 KB
02-38.txt 3 ms 256 KB
02-39.txt 3 ms 256 KB
02-40.txt 3 ms 256 KB
sample-01.txt 3 ms 256 KB
sample-02.txt 3 ms 256 KB
sample-03.txt 3 ms 256 KB