oj.uz

답안 #123476

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
123476 2019-07-01T13:45:26 Z nxteru 코끼리 (Dancing Elephants) (IOI11_elephants) C++14
26 / 100
 9000 ms 4472 KB 
#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;
#define MAX_N 150005
#define B 4
int n,k,bs[MAX_N/B+1],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+1][B*2+1],sz[MAX_N/B+1][B*2+1],el[MAX_N/B+1][B*2+1];
void Bini(int x,int *xel,int xbs,int *xds,int *xsz){
	sort(xel,xel+xbs);
	int r=xbs;
	for(int i=xbs-1;i>=0;i--){
		while(r-1>=0&&xel[i]+l<xel[r-1])r--;
		if(r==xbs){
			xds[i]=xel[i]+l;
			xsz[i]=1;
		}else{
			xds[i]=xds[r];
			xsz[i]=xsz[r]+1;
		}
	}
}
void ALLini(void){
	for(int i=0;i<n;i++)pl[i]=p[i];
	sort(pl,pl+n);
	bs[0]=0;
	k=0;
	for(int i=0;i<n;i++){
		if(bs[k]>=B){
			k++;
			bs[k]=0;
		}
		el[k][bs[k]]=pl[i];
		bs[k]++;
	}
	for(int i=0;i<=k;i++)Bini(i,el[i],bs[i],ds[i],sz[i]);
}
void init(int N, int L, int X[]){
	n=N,l=L;
	for(int i=0;i<n;i++)p[i]=X[i];
	ALLini();
}
int update(int t, int y){
	int a=-1,b=p[t];
	while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=b))a++;
	if(a==-1)a=0;
	for(int i=0;i<bs[a]-1;i++){
		if(el[a][i]==b){
			el[a][i]=el[a][bs[a]-1];
			break;
		}
	}
	bs[a]--;
	Bini(a,el[a],bs[a],ds[a],sz[a]);
	p[t]=y;
	a=-1;
	while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=y))a++;
	if(a==-1)a=0;
	el[a][bs[a]]=y;
	bs[a]++;
	Bini(a,el[a],bs[a],ds[a],sz[a]);
	int ans=0;
	a=0,b=-1;
	for(;a<=k;a++){
		if(bs[a]==0)continue;
		int c=upper_bound(el[a],el[a]+bs[a],b)-el[a];
		if(c==bs[a])continue;
		ans+=sz[a][c];
		b=ds[a][c];
	}
	cnt++;
	if(cnt>=B){
		cnt=0;
		ALLini();
	}
	return ans;
}

Compilation message

elephants.cpp: In function 'int update(int, int)':
elephants.cpp:43:14: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=b))a++;
        ~~~~~~^~~~~~~~~~~~
elephants.cpp:55:14: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=y))a++;
        ~~~~~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 396 KB Output is correct
6 Correct 2 ms 376 KB Output is correct

Subtask #3
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 396 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 5978 ms 2400 KB Output is correct
8 Correct 8455 ms 2704 KB Output is correct
9 Execution timed out 9071 ms 4472 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #4
0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 396 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 5978 ms 2400 KB Output is correct
8 Correct 8455 ms 2704 KB Output is correct
9 Execution timed out 9071 ms 4472 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #5
0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 396 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 5978 ms 2400 KB Output is correct
8 Correct 8455 ms 2704 KB Output is correct
9 Execution timed out 9071 ms 4472 KB Time limit exceeded
10 Halted 0 ms 0 KB -