Submission #93996

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
93996	2019-01-14 13:06:45	fjzzq2002	쌀 창고 (IOI11_ricehub)	C++14	100 / 100	222 ms	2664 KiB

ricehub

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#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll qz[123456];
int besthub(int N,int L_,int X[],ll B)
{
  int ans=0;
  for(int i=0;i<N;++i)
    qz[i+1]=qz[i]+X[i];
  for(int i=0;i<N;++i)
  {
    int u=X[i];
    int L=0,R=1.01e9;
    while(L<R)
    {
      int M=(L+R+1)>>1;
      int u1=lower_bound(X,X+N,u-M)-X,
      u2=lower_bound(X,X+N,u+M+1)-X-1;
      //[u1,i] [i,u2]
      ll co=(i-u1+1)*ll(u)-(qz[i+1]-qz[u1])
      +(qz[u2+1]-qz[i])-(u2-i+1)*ll(u);
      int cn=u2-u1+1;
      if(co>B) R=M-1; else L=M;
    }
    {
      int M=L;
      int u1=lower_bound(X,X+N,u-M)-X,
      u2=lower_bound(X,X+N,u+M+1)-X-1;
      //[u1,i] [i,u2]
 
 
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Compilation message (stderr)

ricehub.cpp: In function 'int besthub(int, int, int*, ll)':
ricehub.cpp:23:8: warning: unused variable 'cn' [-Wunused-variable]
    int cn=u2-u1+1;
        ^~

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