oj.uz

Submission #874372

# Submission time Handle Problem Language Result Execution time Memory
874372 2023-11-16T19:12:59 Z AlphaMale06 Xylophone (JOI18_xylophone) C++14
47 / 100
 45 ms 448 KB 
#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;

void solve(int n){
    bool have[n+1]={0};
    int a[n+1]={0};
    int mn;
    int l=1;
    int r=n-1;
    while(l<=r){
        int s=(l+r)/2;
        if(query(s+1, n)==n-1){
            l=s+1;
        }
        else{
            r=s-1;
        }
    }
    mn=l;
    have[1]=1;
    int nxt=1+query(mn, mn+1);
    a[mn]=1;
    a[mn+1]=nxt;
    have[nxt]=1;
    if(mn!=1){
        int prv=1+query(mn-1, mn);
        a[mn-1]=prv;
        have[prv]=1;
    }
    for(int i=mn-2; i>=1; i--){
        int q1=query(i, i+1);
        int pos1=a[i+1]+q1;
        int pos2=a[i+1]-q1;
        if(pos1<=0 || pos1>n || have[pos1]){
            a[i]=pos2;
        }
        else if(pos2<=0 || pos2>n || have[pos2]){
            a[i]=pos1;
        }
        else{
            int q2=query(i, i+2);
            if(q2==q1 || q2==abs(a[i+1]-a[i+2])){
                if(a[i+1]>a[i+2]){
                    a[i]=pos2;
                }
                else{
                    a[i]=pos1;
                }
            }
            else{
                if(a[i+1]>a[i+2]){
                    a[i]=pos1;
                }
                else a[i]=pos2;
            }
        }
    }
    for(int i=mn+2; i<=n; i++){
        int q1=query(i-1, i);
        int pos1=a[i-1]+q1;
        int pos2=a[i-1]-q1;
        if(pos1<=0 || pos1>n || have[pos1]){
            a[i]=pos2;
        }
        else if(pos2<=0 || pos2>n || have[pos2]){
            a[i]=pos1;
        }
        else{
            int q2=query(i-2, i);
            if(q2==q1 || q2==abs(a[i-1]-a[i-2])){
                if(a[i-1]>a[i-2]){
                    a[i]=pos2;
                }
                else{
                    a[i]=pos1;
                }
            }
            else{
                if(a[i-1]>a[i-2]){
                    a[i]=pos1;
                }
                else a[i]=pos2;
            }
        }
    }
    for(int i=1; i<=n; i++){
        answer(i, a[i]);
    }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 6 ms 344 KB Output is correct
19 Correct 6 ms 444 KB Output is correct
20 Correct 8 ms 436 KB Output is correct
21 Correct 6 ms 440 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 7 ms 440 KB Output is correct
24 Correct 6 ms 344 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 7 ms 436 KB Output is correct
27 Correct 7 ms 344 KB Output is correct
28 Correct 6 ms 440 KB Output is correct
29 Correct 5 ms 436 KB Output is correct
30 Correct 6 ms 344 KB Output is correct

Subtask #3
0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 6 ms 344 KB Output is correct
19 Correct 6 ms 444 KB Output is correct
20 Correct 8 ms 436 KB Output is correct
21 Correct 6 ms 440 KB Output is correct
22 Correct 6 ms 344 KB Output is correct
23 Correct 7 ms 440 KB Output is correct
24 Correct 6 ms 344 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 7 ms 436 KB Output is correct
27 Correct 7 ms 344 KB Output is correct
28 Correct 6 ms 440 KB Output is correct
29 Correct 5 ms 436 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 17 ms 444 KB Output is correct
32 Correct 20 ms 448 KB Output is correct
33 Correct 35 ms 432 KB Output is correct
34 Correct 36 ms 436 KB Output is correct
35 Correct 37 ms 448 KB Output is correct
36 Incorrect 45 ms 344 KB Wrong Answer [2]
37 Halted 0 ms 0 KB -