Submission #7929947


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#include <bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define int long long
#define inf 1000000007
#define LINF 100000000000000007LL
#define ll long long
using namespace std;
signed main(){
	int n,a;
	cin>>n>>a;
	double loga = log(1.0*n);
	int ans = LINF;
	for(int k=0;k<=40;k++){
		int ng = 0, ok = (1LL<<40);
		while( ok - ng > 1 ){
			int mid = ( ok + ng ) / 2;
			double cur = log( 1.0 * mid ) * (k + 1);
			if( cur >= loga ){
				ok = mid;
			}
			else{
				ng = mid;
			}
		}
		int c = 1, cnt = 0;
		for(int i=1;i<=k+1;i++){
			c *= ok;
		}
		while( (c/ok)*(ok-1) >= n ){
			cnt++;
			c = (c/ok) * (ok-1);
		}
		int tmp = a*k + ok*(k+1) - cnt;
		if( ans > tmp ) ans = tmp;
	}
	cout<<ans<<endl;
	return 0;
}

Submission Info

Submission Time
Task E - Cookies
User gbis36
Language C++14 (GCC 5.4.1)
Score 1000
Code Size 763 Byte
Status
Exec Time 6 ms
Memory 512 KB

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 500 / 500 500 / 500
Status
Test Cases sample-01.txt, sample-02.txt, sample-03.txt 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 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
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, sample-01.txt, sample-02.txt, sample-03.txt
Case Name Status Exec Time Memory
01-01.txt 6 ms 512 KB
01-02.txt 1 ms 256 KB
01-03.txt 1 ms 256 KB
01-04.txt 1 ms 256 KB
01-05.txt 1 ms 256 KB
01-06.txt 1 ms 256 KB
01-07.txt 1 ms 256 KB
01-08.txt 1 ms 256 KB
01-09.txt 1 ms 256 KB
01-10.txt 1 ms 256 KB
01-11.txt 1 ms 256 KB
01-12.txt 1 ms 256 KB
01-13.txt 1 ms 256 KB
01-14.txt 1 ms 256 KB
01-15.txt 1 ms 256 KB
01-16.txt 1 ms 256 KB
01-17.txt 1 ms 256 KB
01-18.txt 1 ms 256 KB
01-19.txt 1 ms 256 KB
01-20.txt 1 ms 256 KB
01-21.txt 1 ms 256 KB
01-22.txt 1 ms 256 KB
01-23.txt 1 ms 256 KB
01-24.txt 1 ms 256 KB
01-25.txt 1 ms 256 KB
01-26.txt 1 ms 256 KB
02-01.txt 1 ms 256 KB
02-02.txt 1 ms 256 KB
02-03.txt 1 ms 256 KB
02-04.txt 1 ms 256 KB
02-05.txt 1 ms 256 KB
02-06.txt 1 ms 256 KB
02-07.txt 1 ms 256 KB
02-08.txt 1 ms 256 KB
02-09.txt 1 ms 256 KB
02-10.txt 1 ms 256 KB
02-11.txt 1 ms 256 KB
02-12.txt 1 ms 256 KB
02-13.txt 1 ms 256 KB
02-14.txt 1 ms 256 KB
02-15.txt 1 ms 256 KB
02-16.txt 1 ms 256 KB
02-17.txt 1 ms 256 KB
02-18.txt 1 ms 256 KB
02-19.txt 1 ms 256 KB
02-20.txt 1 ms 256 KB
02-21.txt 1 ms 256 KB
02-22.txt 1 ms 256 KB
02-23.txt 1 ms 256 KB
02-24.txt 1 ms 256 KB
02-25.txt 1 ms 256 KB
02-26.txt 1 ms 256 KB
02-27.txt 1 ms 256 KB
02-28.txt 1 ms 256 KB
02-29.txt 1 ms 256 KB
02-30.txt 1 ms 256 KB
02-31.txt 1 ms 256 KB
02-32.txt 1 ms 256 KB
02-33.txt 1 ms 256 KB
02-34.txt 1 ms 256 KB
02-35.txt 1 ms 256 KB
02-36.txt 1 ms 256 KB
02-37.txt 1 ms 256 KB
02-38.txt 1 ms 256 KB
02-39.txt 1 ms 256 KB
02-40.txt 1 ms 256 KB
sample-01.txt 1 ms 256 KB
sample-02.txt 1 ms 256 KB
sample-03.txt 1 ms 256 KB