oj.uz

Submission #123530

# Submission time Handle Problem Language Result Execution time Memory
123530 2019-07-01T14:29:33 Z nxteru Dancing Elephants (IOI11_elephants) C++14
50 / 100
 9000 ms 5148 KB 
#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;
#define MAX_N 150005
#define B 450
int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*2+1],sz[MAX_N/B+2][B*2+1],el[MAX_N/B+2][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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory 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 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 988 ms 1432 KB Output is correct
8 Correct 1010 ms 1616 KB Output is correct
9 Correct 1180 ms 2680 KB Output is correct
10 Correct 766 ms 2808 KB Output is correct
11 Correct 744 ms 2808 KB Output is correct
12 Correct 1776 ms 2808 KB Output is correct
13 Correct 694 ms 2808 KB Output is correct

Subtask #4
0 / 47.0

# Verdict Execution time Memory 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 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 988 ms 1432 KB Output is correct
8 Correct 1010 ms 1616 KB Output is correct
9 Correct 1180 ms 2680 KB Output is correct
10 Correct 766 ms 2808 KB Output is correct
11 Correct 744 ms 2808 KB Output is correct
12 Correct 1776 ms 2808 KB Output is correct
13 Correct 694 ms 2808 KB Output is correct
14 Correct 1453 ms 1856 KB Output is correct
15 Correct 1489 ms 2168 KB Output is correct
16 Correct 2716 ms 3036 KB Output is correct
17 Correct 2889 ms 3704 KB Output is correct
18 Correct 3008 ms 3704 KB Output is correct
19 Execution timed out 9085 ms 5148 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #5
0 / 3.0

# Verdict Execution time Memory 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 3 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 988 ms 1432 KB Output is correct
8 Correct 1010 ms 1616 KB Output is correct
9 Correct 1180 ms 2680 KB Output is correct
10 Correct 766 ms 2808 KB Output is correct
11 Correct 744 ms 2808 KB Output is correct
12 Correct 1776 ms 2808 KB Output is correct
13 Correct 694 ms 2808 KB Output is correct
14 Correct 1453 ms 1856 KB Output is correct
15 Correct 1489 ms 2168 KB Output is correct
16 Correct 2716 ms 3036 KB Output is correct
17 Correct 2889 ms 3704 KB Output is correct
18 Correct 3008 ms 3704 KB Output is correct
19 Execution timed out 9085 ms 5148 KB Time limit exceeded
20 Halted 0 ms 0 KB -