oj.uz

Submission #957856

# Submission time Handle Problem Language Result Execution time Memory
957856 2024-04-04T12:21:59 Z vjudge1 Abracadabra (CEOI22_abracadabra) C
25 / 100
 863 ms 32184 KB 
#include<stdio.h>
#include<stdlib.h>

#define N 100004
int n,a[N],t[N],q,sz[N],at[N],*eh[N],eo[N],zz[N];

void upd(int p,int k) { for(;p<N;p|=p+1)t[p]+=k; }
int qry(int p) {int z=0;for(;p;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<<20;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()
{
    int g1=grp(n/2),g2=grp(n/2+1);
    if(g1!=g2)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;
    a[n+1]=n+1;
    for(int l=1,i=1;i<=n+1;++i) if(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)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.c: In function 'append':
Main.c:25:18: warning: suggest parentheses around '-' in operand of '&' [-Wparentheses]
   25 |     if(o>=2&&(o&o-1)==0)eh[i]=(int*)realloc(eh[i],2*o*sizeof**eh);
      |                 ~^~
Main.c: In function 'shuffle':
Main.c:34:9: warning: unused variable 'st' [-Wunused-variable]
   34 |     int st=at[g1];
      |         ^~
Main.c: In function 'main':
Main.c:44:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |     scanf("%d%d",&n,&q);
      |     ^~~~~~~~~~~~~~~~~~~
Main.c:45:26: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |     for(int i=1;i<=n;++i)scanf("%d",a+i),at[a[i]]=i;
      |                          ^~~~~~~~~~~~~~~
Main.c:53:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |         scanf("%d%d",&t,&p);
      |         ^~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 166 ms 32184 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Runtime error 8 ms 2652 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 863 ms 9284 KB Output is correct
2 Correct 60 ms 9556 KB Output is correct
3 Correct 846 ms 9260 KB Output is correct
4 Correct 51 ms 9172 KB Output is correct
5 Correct 52 ms 9296 KB Output is correct
6 Correct 52 ms 9236 KB Output is correct
7 Correct 51 ms 9296 KB Output is correct
8 Correct 54 ms 9180 KB Output is correct
9 Correct 50 ms 9296 KB Output is correct
10 Correct 47 ms 9300 KB Output is correct
11 Correct 46 ms 9552 KB Output is correct
12 Correct 58 ms 9344 KB Output is correct
13 Correct 53 ms 9148 KB Output is correct
14 Correct 46 ms 9552 KB Output is correct
15 Correct 49 ms 9300 KB Output is correct
16 Correct 18 ms 6232 KB Output is correct
17 Correct 52 ms 8784 KB Output is correct
18 Correct 54 ms 7892 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 166 ms 32184 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -