Submission #5018450


Source Code Expand

#include<bits/stdc++.h>
#define debug cout<<"debug\n";
using namespace std;
typedef long long ll; 
ll quick_pow(ll a,ll b){
	ll ans=1;
	while(b){
		if(b&1) ans=ans*a;
		a=a*a;
		b>>=1;
	}
	return ans;
}
bool pre(ll y,ll x,ll n){
	return x*log(y*1.0)>=log(n*1.0);
}
ll solve(ll x,ll y,ll n,ll a){
	if(pre(y,x,n)) return (y+a)*x+1;
	if(quick_pow(y,x)>n) return (y+a)*x+1;
	return (y+a)*x+(n+quick_pow(y,x)-1)/quick_pow(y,x);
}
int main()
{
	ll n,a;
	cin>>n>>a;
	ll ans=n;
	ll l=2,r=n;
	ll mid,mmid;
	while(l<=r){
		mid=(l+r)>>1;
		mmid=(mid+r)>>1;
		ll temp1=1e18+5,temp2=1e18+5;
		for(int x=1;x<=50;x++){
			temp1=min(temp1,solve(x,mid,n,a));
			temp2=min(temp2,solve(x,mmid,n,a));
		}
		if(temp1<temp2){
			r=mmid-1;
		}else l=mid+1;
		ans=min(ans,min(temp1,temp2));
	}
	ll tt=1e18+5;
	l-=2,r+=2;
	for(ll y=max(l,1ll);y<=r;y++)
	for(int x=1;x<=50;x++){
		tt=min(tt,solve(x,y,n,a));
	}
	for(int y=2;y<=1e5;y++){
		for(int x=1;x<=45;x++){
			tt=min(tt,solve(x,y,n,a));
		}
	}
	cout<<min(ans,tt)<<endl;
	return 0;
}

Submission Info

Submission Time
Task E - Cookies
User vjudge5
Language C++14 (GCC 5.4.1)
Score 0
Code Size 1013 Byte
Status WA
Exec Time 318 ms
Memory 256 KB

Judge Result

Set Name sample dataset1 dataset2
Score / Max Score 0 / 0 0 / 500 0 / 500
Status
AC × 3
AC × 26
WA × 1
AC × 61
WA × 11
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 AC 291 ms 256 KB
01-02.txt AC 292 ms 256 KB
01-03.txt AC 291 ms 256 KB
01-04.txt WA 292 ms 256 KB
01-05.txt AC 292 ms 256 KB
01-06.txt AC 292 ms 256 KB
01-07.txt AC 293 ms 256 KB
01-08.txt AC 291 ms 256 KB
01-09.txt AC 292 ms 256 KB
01-10.txt AC 291 ms 256 KB
01-11.txt AC 292 ms 256 KB
01-12.txt AC 291 ms 256 KB
01-13.txt AC 292 ms 256 KB
01-14.txt AC 292 ms 256 KB
01-15.txt AC 285 ms 256 KB
01-16.txt AC 285 ms 256 KB
01-17.txt AC 292 ms 256 KB
01-18.txt AC 283 ms 256 KB
01-19.txt AC 284 ms 256 KB
01-20.txt AC 241 ms 256 KB
01-21.txt AC 243 ms 256 KB
01-22.txt AC 282 ms 256 KB
01-23.txt AC 290 ms 256 KB
01-24.txt AC 282 ms 256 KB
01-25.txt AC 293 ms 256 KB
01-26.txt AC 291 ms 256 KB
02-01.txt AC 251 ms 256 KB
02-02.txt AC 294 ms 256 KB
02-03.txt AC 294 ms 256 KB
02-04.txt AC 295 ms 256 KB
02-05.txt AC 294 ms 256 KB
02-06.txt AC 296 ms 256 KB
02-07.txt WA 296 ms 256 KB
02-08.txt WA 295 ms 256 KB
02-09.txt WA 295 ms 256 KB
02-10.txt WA 294 ms 256 KB
02-11.txt WA 294 ms 256 KB
02-12.txt AC 294 ms 256 KB
02-13.txt AC 294 ms 256 KB
02-14.txt AC 294 ms 256 KB
02-15.txt WA 295 ms 256 KB
02-16.txt AC 293 ms 256 KB
02-17.txt AC 294 ms 256 KB
02-18.txt AC 294 ms 256 KB
02-19.txt AC 294 ms 256 KB
02-20.txt AC 294 ms 256 KB
02-21.txt AC 294 ms 256 KB
02-22.txt WA 294 ms 256 KB
02-23.txt WA 294 ms 256 KB
02-24.txt AC 302 ms 256 KB
02-25.txt AC 292 ms 256 KB
02-26.txt AC 287 ms 256 KB
02-27.txt AC 287 ms 256 KB
02-28.txt AC 286 ms 256 KB
02-29.txt AC 286 ms 256 KB
02-30.txt AC 286 ms 256 KB
02-31.txt AC 287 ms 256 KB
02-32.txt WA 286 ms 256 KB
02-33.txt AC 293 ms 256 KB
02-34.txt AC 294 ms 256 KB
02-35.txt AC 295 ms 256 KB
02-36.txt WA 293 ms 256 KB
02-37.txt AC 287 ms 256 KB
02-38.txt AC 294 ms 256 KB
02-39.txt AC 294 ms 256 KB
02-40.txt AC 292 ms 256 KB
sample-01.txt AC 283 ms 256 KB
sample-02.txt AC 295 ms 256 KB
sample-03.txt AC 318 ms 256 KB