oj.uz

Submission #957865

# Submission time Handle Problem Language Result Execution time Memory
957865 2024-04-04T12:29:28 Z vjudge1 Abracadabra (CEOI22_abracadabra) C++17
35 / 100
 3000 ms 25680 KB 
#include<stdio.h>
#include<stdlib.h>

#define N 200004
int n,a[N],t[N],q,sz[N],at[N],*eh[N],eo[N],zz[1000005];

void upd(int p,int k) { for(;p<N;p|=p+1)t[p]+=k; }
int qry(int p) {int z=0;for(;p>0;p&=p-1)z+=t[p-1];return z;}

void add(int p,int k) { sz[p]=k; upd(p,k); }
void rem(int p) { upd(p,-sz[p]); }

int grp(int x)
{
    if(x<=0)return -1;
    int p=0,v=0;
    for(int j=1<<19;j>0;j>>=1) if(p+j<=N&&v+t[p+j-1]<x)p+=j,v+=t[p-1];
    return p;
}

void append(int i,int j)
{
    int o=eo[i]++;
    if(o>=2&&(o&o-1)==0)eh[i]=(int*)realloc(eh[i],2*o*sizeof**eh);
    eh[i][o]=j;
}

void shuffle()
{
    static int done=0;
    if(done)return;
    int g1=grp(n/2),g2=grp(n/2+1);
    if(g1!=g2){done=1;return;}
    int rl=qry(g1);
    int st=at[g1];
    int md=n/2-rl+at[g1];
    int ed=at[g1]+sz[g1];
    for(int l=md,j=md;j<=ed;++j) if(j==ed||a[j]>a[l])add(a[l],j-l),l=j;
    rem(g1);
    add(g1,n/2-rl);
}

int main()
{
    scanf("%d%d",&n,&q);
    for(int i=1;i<=n;++i)scanf("%d",a+i),at[a[i]]=i;
    for(int l=1,i=1;i<=n+1;++i) if(i==n+1||a[i]>a[l]) add(a[l],i-l),l=i;

    for(int i=0;i<=n+1;++i)eh[i]=(int*)realloc(0,2*sizeof**eh);

    for(int t,p,i=0;i<q;++i)
    {
        scanf("%d%d",&t,&p);
        if(t>n+1)t=n+1;
        append(t,i),append(t,p);
    }

    for(int i=0;i<=n+1;++i)
    {
        for(int j=0;j<eo[i];j+=2)
        {
            int gg=grp(eh[i][j+1]);
            int idx=eh[i][j+1]-qry(gg);
            zz[eh[i][j]]=a[at[gg]+idx-1];
        }
        shuffle();
    }

    for(int i=0;i<q;++i)printf("%d\n",zz[i]);

    return 0;
}

Compilation message

Main.cpp: In function 'void append(int, int)':
Main.cpp:24:18: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   24 |     if(o>=2&&(o&o-1)==0)eh[i]=(int*)realloc(eh[i],2*o*sizeof**eh);
      |                 ~^~
Main.cpp: In function 'void shuffle()':
Main.cpp:35:9: warning: unused variable 'st' [-Wunused-variable]
   35 |     int st=at[g1];
      |         ^~
Main.cpp: In function 'int main()':
Main.cpp:45:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |     scanf("%d%d",&n,&q);
      |     ~~~~~^~~~~~~~~~~~~~
Main.cpp:46:31: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |     for(int i=1;i<=n;++i)scanf("%d",a+i),at[a[i]]=i;
      |                          ~~~~~^~~~~~~~~~
Main.cpp:53:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         scanf("%d%d",&t,&p);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 271 ms 24168 KB Output is correct
2 Correct 276 ms 22864 KB Output is correct
3 Correct 260 ms 22368 KB Output is correct
4 Correct 247 ms 22224 KB Output is correct
5 Correct 264 ms 24404 KB Output is correct
6 Correct 251 ms 25168 KB Output is correct
7 Correct 271 ms 25680 KB Output is correct
8 Correct 258 ms 23784 KB Output is correct
9 Correct 251 ms 22956 KB Output is correct
10 Correct 257 ms 22388 KB Output is correct
11 Correct 257 ms 22488 KB Output is correct
12 Correct 256 ms 21204 KB Output is correct
13 Correct 261 ms 21964 KB Output is correct
14 Correct 280 ms 24156 KB Output is correct
15 Correct 272 ms 22400 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 273 ms 21064 KB Output is correct
18 Correct 242 ms 20976 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3041 ms 20564 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 885 ms 10960 KB Output is correct
2 Correct 67 ms 11860 KB Output is correct
3 Correct 796 ms 11156 KB Output is correct
4 Correct 48 ms 11472 KB Output is correct
5 Correct 52 ms 11348 KB Output is correct
6 Correct 44 ms 11400 KB Output is correct
7 Correct 52 ms 11344 KB Output is correct
8 Correct 45 ms 11432 KB Output is correct
9 Correct 48 ms 11344 KB Output is correct
10 Correct 38 ms 11604 KB Output is correct
11 Correct 40 ms 11856 KB Output is correct
12 Correct 40 ms 11692 KB Output is correct
13 Correct 41 ms 11628 KB Output is correct
14 Correct 40 ms 11812 KB Output is correct
15 Correct 38 ms 11600 KB Output is correct
16 Correct 10 ms 9564 KB Output is correct
17 Correct 42 ms 11176 KB Output is correct
18 Correct 40 ms 11220 KB Output is correct
19 Correct 1 ms 6488 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 271 ms 24168 KB Output is correct
2 Correct 276 ms 22864 KB Output is correct
3 Correct 260 ms 22368 KB Output is correct
4 Correct 247 ms 22224 KB Output is correct
5 Correct 264 ms 24404 KB Output is correct
6 Correct 251 ms 25168 KB Output is correct
7 Correct 271 ms 25680 KB Output is correct
8 Correct 258 ms 23784 KB Output is correct
9 Correct 251 ms 22956 KB Output is correct
10 Correct 257 ms 22388 KB Output is correct
11 Correct 257 ms 22488 KB Output is correct
12 Correct 256 ms 21204 KB Output is correct
13 Correct 261 ms 21964 KB Output is correct
14 Correct 280 ms 24156 KB Output is correct
15 Correct 272 ms 22400 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 273 ms 21064 KB Output is correct
18 Correct 242 ms 20976 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6488 KB Output is correct
21 Execution timed out 3041 ms 20564 KB Time limit exceeded
22 Halted 0 ms 0 KB -