Submission #123517

#	Time	Username	Problem	Language	Result	Execution time	Memory
123517		nxteru	Dancing Elephants (IOI11_elephants)	C++14	Compilation error	0 ms	0 KiB

elephants

#include "elephants.h"
#include <bits/stdc++.h>
using namespace std;
#define B 350
int MAX_N;
int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*3+1],sz[MAX_N/B+2][B*3+1],el[MAX_N/B+2][B*3+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;
	MAX_N=n;
	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/2){
		cnt=0;
		ALLini();
	}
	return ans;
}

Compilation message (stderr)

elephants.cpp:6:21: error: array bound is not an integer constant before ']' token
 int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*3+1],sz[MAX_N/B+2][B*3+1],el[MAX_N/B+2][B*3+1];
                     ^
elephants.cpp:6:30: error: array bound is not an integer constant before ']' token
 int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*3+1],sz[MAX_N/B+2][B*3+1],el[MAX_N/B+2][B*3+1];
                              ^
elephants.cpp:6:40: error: array bound is not an integer constant before ']' token
 int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*3+1],sz[MAX_N/B+2][B*3+1],el[MAX_N/B+2][B*3+1];
                                        ^
elephants.cpp:6:60: error: array bound is not an integer constant before ']' token
 int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*3+1],sz[MAX_N/B+2][B*3+1],el[MAX_N/B+2][B*3+1];
                                                            ^
elephants.cpp:6:81: error: array bound is not an integer constant before ']' token
 int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*3+1],sz[MAX_N/B+2][B*3+1],el[MAX_N/B+2][B*3+1];
                                                                                 ^
elephants.cpp:6:102: error: array bound is not an integer constant before ']' token
 int n,k,bs[MAX_N/B+2],p[MAX_N],pl[MAX_N],l,cnt,ds[MAX_N/B+2][B*3+1],sz[MAX_N/B+2][B*3+1],el[MAX_N/B+2][B*3+1];
                                                                                                      ^
elephants.cpp: In function 'void ALLini()':
elephants.cpp:22:22: error: 'pl' was not declared in this scope
  for(int i=0;i<n;i++)pl[i]=p[i];
                      ^~
elephants.cpp:22:22: note: suggested alternative: 'l'
  for(int i=0;i<n;i++)pl[i]=p[i];
                      ^~
                      l
elephants.cpp:22:28: error: 'p' was not declared in this scope
  for(int i=0;i<n;i++)pl[i]=p[i];
                            ^
elephants.cpp:23:7: error: 'pl' was not declared in this scope
  sort(pl,pl+n);
       ^~
elephants.cpp:23:7: note: suggested alternative: 'l'
  sort(pl,pl+n);
       ^~
       l
elephants.cpp:24:2: error: 'bs' was not declared in this scope
  bs[0]=0;
  ^~
elephants.cpp:24:2: note: suggested alternative: 'abs'
  bs[0]=0;
  ^~
  abs
elephants.cpp:31:3: error: 'el' was not declared in this scope
   el[k][bs[k]]=pl[i];
   ^~
elephants.cpp:31:3: note: suggested alternative: 'l'
   el[k][bs[k]]=pl[i];
   ^~
   l
elephants.cpp:34:30: error: 'el' was not declared in this scope
  for(int i=0;i<=k;i++)Bini(i,el[i],bs[i],ds[i],sz[i]);
                              ^~
elephants.cpp:34:30: note: suggested alternative: 'l'
  for(int i=0;i<=k;i++)Bini(i,el[i],bs[i],ds[i],sz[i]);
                              ^~
                              l
elephants.cpp:34:42: error: 'ds' was not declared in this scope
  for(int i=0;i<=k;i++)Bini(i,el[i],bs[i],ds[i],sz[i]);
                                          ^~
elephants.cpp:34:48: error: 'sz' was not declared in this scope
  for(int i=0;i<=k;i++)Bini(i,el[i],bs[i],ds[i],sz[i]);
                                                ^~
elephants.cpp: In function 'void init(int, int, int*)':
elephants.cpp:39:22: error: 'p' was not declared in this scope
  for(int i=0;i<n;i++)p[i]=X[i];
                      ^
elephants.cpp: In function 'int update(int, int)':
elephants.cpp:43:13: error: 'p' was not declared in this scope
  int a=-1,b=p[t];
             ^
elephants.cpp:44:16: error: 'bs' was not declared in this scope
  while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=b))a++;
                ^~
elephants.cpp:44:16: note: suggested alternative: 'b'
  while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=b))a++;
                ^~
                b
elephants.cpp:44:41: error: 'el' was not declared in this scope
  while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=b))a++;
                                         ^~
elephants.cpp:44:41: note: suggested alternative: 'l'
  while(a+1<=k&&bs[a+1]==0||(bs[a+1]>=1&&el[a+1][0]<=b))a++;
                                         ^~
                                         l
elephants.cpp:46:16: error: 'bs' was not declared in this scope
  for(int i=0;i<bs[a]-1;i++){
                ^~
elephants.cpp:46:16: note: suggested alternative: 'b'
  for(int i=0;i<bs[a]-1;i++){
                ^~
                b
elephants.cpp:47:6: error: 'el' was not declared in this scope
   if(el[a][i]==b){
      ^~
elephants.cpp:47:6: note: suggested alternative: 'l'
   if(el[a][i]==b){
      ^~
      l
elephants.cpp:52:2: error: 'bs' was not declared in this scope
  bs[a]--;
  ^~
elephants.cpp:52:2: note: suggested alternative: 'b'
  bs[a]--;
  ^~
  b
elephants.cpp:53:9: error: 'el' was not declared in this scope
  Bini(a,el[a],bs[a],ds[a],sz[a]);
         ^~
elephants.cpp:53:9: note: suggested alternative: 'l'
  Bini(a,el[a],bs[a],ds[a],sz[a]);
         ^~
         l
elephants.cpp:53:21: error: 'ds' was not declared in this scope
  Bini(a,el[a],bs[a],ds[a],sz[a]);
                     ^~
elephants.cpp:53:27: error: 'sz' was not declared in this scope
  Bini(a,el[a],bs[a],ds[a],sz[a]);
                           ^~