Submission #61057

#	Time	Username	Problem	Language	Result	Execution time	Memory
61057		TuGSGeReL	쌀 창고 (IOI11_ricehub)	C++14	0 / 100	7 ms	984 KiB

ricehub

#include "ricehub.h"
#include<bits/stdc++.h>
#define ll long long
#define mp make_pair
#define pub push_back
#define pob pop_back
using namespace std;
ll i,n,ans,a[111111],b,c[111111];
bool can(ll k, ll kk){
	ll md=(k+kk)/2,cst;
	ll md1=(k+kk)/2+1,cst1;
	if(k && md)cst=(md-k)*a[md]-c[md-1]+c[k-1]+c[kk]-c[md]-(kk-md)*a[md];
	else if(md) cst=(md-k)*a[md]-c[md-1]+c[kk]-c[md]-(kk-md)*a[md];
	else cst=c[kk]-c[md]-(kk-md)*a[md];
	if(k && md1)cst=(md1-k)*a[md1]-c[md1-1]+c[k-1]+c[kk]-c[md1]-(kk-md1)*a[md1];
	else if(md1) cst=(md1-k)*a[md1]-c[md1-1]+c[kk]-c[md1]-(kk-md1)*a[md1];
	else cst=c[kk]-c[md1]-(kk-md1)*a[md1];
	//cout<<k<<" "<<kk<<" "<<cst<<"\n";
	if(cst<=b) return 1;
	else return 0;
}
ll fnd(ll k){
	ll x=k,y=n-1;
	while(x+1<y){
		ll mid=(x+y)/2;
		if(can(k,mid))x=mid;
		else y=mid;
	}
	return y;
}
int besthub(int R, int L, int X[], long long B) {
	n=R;
	b=B;
	for(i=0;i<n;i++) a[i]=X[i];
	c[0]=a[0];
	for(i=1;i<n;i++)c[i]=c[i-1]+a[i];
	for(i=0;i<R;i++) ans=max(ans,fnd(i)-i+1);
	return ans;
}

Compilation message (stderr)

ricehub.cpp: In function 'bool can(long long int, long long int)':
ricehub.cpp:11:20: warning: unused variable 'cst1' [-Wunused-variable]
  ll md1=(k+kk)/2+1,cst1;
                    ^~~~

• Subtask 1: 0 / 17
• Subtask 2: 0 / 25
• Subtask 3: 0 / 26
• Subtask 4: 0 / 32