oj.uz

Submission #653315

# Submission time Handle Problem Language Result Execution time Memory
653315 2022-10-26T14:19:05 Z Dec0Dedd Xylophone (JOI18_xylophone) C++14
100 / 100
 76 ms 428 KB 
#include <bits/stdc++.h>
#include "xylophone.h"

using namespace std;

const int N = 5e3+1;

int ans[N], n;
bool us[N];

// [i, j, k]
int que(int l, int r) {
   return query(min(l, r), max(l, r));
}

int val(int i, int j, int k, int l) {
   int p=que(k, i), res=0;

   int y=ans[k], a=ans[j];
   assert(y != a+l), assert(y != a-l);
   if (y > a+l) {
      if (p == y-a) res=a+l;
      else res=a-l;
   } else if (y > a && y < a+l) {
      if (p == l) res=a+l;
      else res=a-l;
   } else if (y < a && y > a-l) {
      if (p == l) res=a-l;
      else res=a+l;
   } else if (y < a-l) {
      if (p == a-y) res=a-l;
      else res=a+l;
   }

   assert(1 <= res && res <= n);
   assert(!us[res]);
   return res;
}

void solve(int np) {
   n=np;
   int l=1, r=n, x=1;
   while (l <= r) {
      int m=(l+r)/2;
      if (que(1, m) == n-1) r=m-1, x=m;
      else l=m+1;
   } ans[x]=n;


   if (x < n) ans[x+1]=n-que(x, x+1), us[ans[x+1]]=true;
   if (x > 1) ans[x-1]=n-que(x-1, x), us[ans[x-1]]=true;

   us[n]=true;
   for (int i=x+2; i<=n; ++i) {
      int l=que(i-1, i);

      if (ans[i-1]+l > n || us[ans[i-1]+l]) ans[i]=ans[i-1]-l;
      else if (ans[i-1]-l < 1 || us[ans[i-1]-l]) ans[i]=ans[i-1]+l;
      else ans[i]=val(i, i-1, i-2, l);
      us[ans[i]]=true;
   }

   for (int i=x-2; i>=1; --i) {
      int l=que(i, i+1);
      if (ans[i+1]+l > n || us[ans[i+1]+l]) ans[i]=ans[i+1]-l;
      else if (ans[i+1]-l < 1 || us[ans[i+1]-l]) ans[i]=ans[i+1]+l;
      else ans[i]=val(i, i+1, i+2, l);
      us[ans[i]]=true;
   }

   for (int i=1; i<=n; ++i) {
      assert(ans[i] > 0);
      answer(i, ans[i]);
   }
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 2 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 3 ms 208 KB Output is correct
10 Correct 2 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 2 ms 208 KB Output is correct

Subtask #2
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 2 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 3 ms 208 KB Output is correct
10 Correct 2 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 2 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 8 ms 208 KB Output is correct
18 Correct 12 ms 208 KB Output is correct
19 Correct 14 ms 292 KB Output is correct
20 Correct 16 ms 292 KB Output is correct
21 Correct 13 ms 308 KB Output is correct
22 Correct 16 ms 208 KB Output is correct
23 Correct 11 ms 208 KB Output is correct
24 Correct 11 ms 288 KB Output is correct
25 Correct 10 ms 312 KB Output is correct
26 Correct 11 ms 312 KB Output is correct
27 Correct 11 ms 208 KB Output is correct
28 Correct 17 ms 308 KB Output is correct
29 Correct 17 ms 208 KB Output is correct
30 Correct 13 ms 208 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 2 ms 208 KB Output is correct
5 Correct 2 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 3 ms 208 KB Output is correct
10 Correct 2 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 2 ms 208 KB Output is correct
13 Correct 2 ms 208 KB Output is correct
14 Correct 2 ms 208 KB Output is correct
15 Correct 2 ms 208 KB Output is correct
16 Correct 4 ms 208 KB Output is correct
17 Correct 8 ms 208 KB Output is correct
18 Correct 12 ms 208 KB Output is correct
19 Correct 14 ms 292 KB Output is correct
20 Correct 16 ms 292 KB Output is correct
21 Correct 13 ms 308 KB Output is correct
22 Correct 16 ms 208 KB Output is correct
23 Correct 11 ms 208 KB Output is correct
24 Correct 11 ms 288 KB Output is correct
25 Correct 10 ms 312 KB Output is correct
26 Correct 11 ms 312 KB Output is correct
27 Correct 11 ms 208 KB Output is correct
28 Correct 17 ms 308 KB Output is correct
29 Correct 17 ms 208 KB Output is correct
30 Correct 13 ms 208 KB Output is correct
31 Correct 20 ms 288 KB Output is correct
32 Correct 40 ms 296 KB Output is correct
33 Correct 51 ms 308 KB Output is correct
34 Correct 58 ms 288 KB Output is correct
35 Correct 58 ms 308 KB Output is correct
36 Correct 44 ms 304 KB Output is correct
37 Correct 44 ms 300 KB Output is correct
38 Correct 58 ms 308 KB Output is correct
39 Correct 56 ms 308 KB Output is correct
40 Correct 56 ms 300 KB Output is correct
41 Correct 54 ms 304 KB Output is correct
42 Correct 36 ms 312 KB Output is correct
43 Correct 42 ms 316 KB Output is correct
44 Correct 35 ms 320 KB Output is correct
45 Correct 57 ms 292 KB Output is correct
46 Correct 76 ms 316 KB Output is correct
47 Correct 56 ms 328 KB Output is correct
48 Correct 68 ms 308 KB Output is correct
49 Correct 72 ms 296 KB Output is correct
50 Correct 53 ms 304 KB Output is correct
51 Correct 51 ms 296 KB Output is correct
52 Correct 57 ms 308 KB Output is correct
53 Correct 61 ms 304 KB Output is correct
54 Correct 53 ms 296 KB Output is correct
55 Correct 58 ms 300 KB Output is correct
56 Correct 48 ms 428 KB Output is correct
57 Correct 53 ms 296 KB Output is correct
58 Correct 64 ms 304 KB Output is correct
59 Correct 57 ms 300 KB Output is correct
60 Correct 49 ms 316 KB Output is correct