oj.uz

Submission #123462

# Submission time Handle Problem Language Result Execution time Memory
123462 2019-07-01T13:29:27 Z nxteru Dancing Elephants (IOI11_elephants) C++14
50 / 100
 9000 ms 6180 KB 
#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;
#define MAX_N 150005
#define B 800
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

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 296 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 376 KB Output is correct
3 Correct 2 ms 296 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 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 376 KB Output is correct
3 Correct 2 ms 296 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 1984 ms 2348 KB Output is correct
8 Correct 2017 ms 2624 KB Output is correct
9 Correct 2141 ms 4344 KB Output is correct
10 Correct 1033 ms 4088 KB Output is correct
11 Correct 989 ms 4040 KB Output is correct
12 Correct 2793 ms 4216 KB Output is correct
13 Correct 973 ms 3960 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 376 KB Output is correct
3 Correct 2 ms 296 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 1984 ms 2348 KB Output is correct
8 Correct 2017 ms 2624 KB Output is correct
9 Correct 2141 ms 4344 KB Output is correct
10 Correct 1033 ms 4088 KB Output is correct
11 Correct 989 ms 4040 KB Output is correct
12 Correct 2793 ms 4216 KB Output is correct
13 Correct 973 ms 3960 KB Output is correct
14 Correct 2575 ms 3152 KB Output is correct
15 Correct 2956 ms 3340 KB Output is correct
16 Correct 4431 ms 4152 KB Output is correct
17 Correct 4335 ms 4984 KB Output is correct
18 Correct 4490 ms 4956 KB Output is correct
19 Execution timed out 9049 ms 6180 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 376 KB Output is correct
3 Correct 2 ms 296 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 1984 ms 2348 KB Output is correct
8 Correct 2017 ms 2624 KB Output is correct
9 Correct 2141 ms 4344 KB Output is correct
10 Correct 1033 ms 4088 KB Output is correct
11 Correct 989 ms 4040 KB Output is correct
12 Correct 2793 ms 4216 KB Output is correct
13 Correct 973 ms 3960 KB Output is correct
14 Correct 2575 ms 3152 KB Output is correct
15 Correct 2956 ms 3340 KB Output is correct
16 Correct 4431 ms 4152 KB Output is correct
17 Correct 4335 ms 4984 KB Output is correct
18 Correct 4490 ms 4956 KB Output is correct
19 Execution timed out 9049 ms 6180 KB Time limit exceeded
20 Halted 0 ms 0 KB -