oj.uz

Submission #751691

# Submission time Handle Problem Language Result Execution time Memory
751691 2023-06-01T08:35:34 Z sofija6 Xylophone (JOI18_xylophone) C++14
100 / 100
 426 ms 456 KB 
#include "xylophone.h"
#include <bits/stdc++.h>

using namespace std;
static int A[5000];
bool check(int N)
{
    bool yes=true;
    int cnt[N+2]={0};
    for (int j=1;j<=N;j++)
        cnt[j]=0;
    for (int j=1;j<=N;j++)
    {
        if (A[j]<=N && A[j]>=1)
        {
            if ((A[j]==N && !cnt[1]) || cnt[A[j]])
                yes=false;
            cnt[A[j]]++;
        }
    }
    for (int j=1;j<=N;j++)
    {
        if (!cnt[j])
            yes=false;
    }
    return yes;
}
void solve(int N) {
    int diff2[N+2],diff3[N+2],cnt[N+2];
    for (int i=1;i<N;i++)
    {
        if (i<N-1)
            diff3[i]=query(i,i+2);
        diff2[i]=query(i,i+1);
    }
    for (int i=1;i<=N;i++)
    {
        int cur=1;
        A[1]=i;
        for (int j=2;j<=N;j++)
        {
            if (j>2 && N>2 && diff3[j-2]!=diff2[j-2]+diff2[j-1])
                cur*=(-1);
            A[j]=A[j-1]+diff2[j-1]*cur;
        }
        if (check(N))
        {
            for (int j=1;j<=N;j++)
                answer(j,A[j]);
            return;
        }
        cur=-1;
        for (int j=2;j<=N;j++)
        {
            if (j>2 && N>2 && diff3[j-2]!=diff2[j-2]+diff2[j-1])
                cur*=(-1);
            A[j]=A[j-1]+diff2[j-1]*cur;
        }
        if (check(N))
        {
            for (int j=1;j<=N;j++)
                answer(j,A[j]);
            return;
        }
    }
}

Compilation message

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:29:31: warning: unused variable 'cnt' [-Wunused-variable]
   29 |     int diff2[N+2],diff3[N+2],cnt[N+2];
      |                               ^~~

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 256 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 3 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 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 2 ms 208 KB Output is correct
10 Correct 2 ms 208 KB Output is correct
11 Correct 3 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 256 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 3 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 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 2 ms 208 KB Output is correct
10 Correct 2 ms 208 KB Output is correct
11 Correct 3 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 5 ms 208 KB Output is correct
17 Correct 11 ms 208 KB Output is correct
18 Correct 15 ms 208 KB Output is correct
19 Correct 29 ms 284 KB Output is correct
20 Correct 26 ms 208 KB Output is correct
21 Correct 25 ms 208 KB Output is correct
22 Correct 24 ms 208 KB Output is correct
23 Correct 16 ms 288 KB Output is correct
24 Correct 26 ms 288 KB Output is correct
25 Correct 19 ms 300 KB Output is correct
26 Correct 33 ms 284 KB Output is correct
27 Correct 21 ms 208 KB Output is correct
28 Correct 17 ms 208 KB Output is correct
29 Correct 27 ms 284 KB Output is correct
30 Correct 19 ms 304 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 256 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 3 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 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 2 ms 208 KB Output is correct
10 Correct 2 ms 208 KB Output is correct
11 Correct 3 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 5 ms 208 KB Output is correct
17 Correct 11 ms 208 KB Output is correct
18 Correct 15 ms 208 KB Output is correct
19 Correct 29 ms 284 KB Output is correct
20 Correct 26 ms 208 KB Output is correct
21 Correct 25 ms 208 KB Output is correct
22 Correct 24 ms 208 KB Output is correct
23 Correct 16 ms 288 KB Output is correct
24 Correct 26 ms 288 KB Output is correct
25 Correct 19 ms 300 KB Output is correct
26 Correct 33 ms 284 KB Output is correct
27 Correct 21 ms 208 KB Output is correct
28 Correct 17 ms 208 KB Output is correct
29 Correct 27 ms 284 KB Output is correct
30 Correct 19 ms 304 KB Output is correct
31 Correct 52 ms 312 KB Output is correct
32 Correct 177 ms 432 KB Output is correct
33 Correct 190 ms 348 KB Output is correct
34 Correct 340 ms 352 KB Output is correct
35 Correct 334 ms 356 KB Output is correct
36 Correct 50 ms 336 KB Output is correct
37 Correct 149 ms 328 KB Output is correct
38 Correct 94 ms 316 KB Output is correct
39 Correct 113 ms 336 KB Output is correct
40 Correct 238 ms 356 KB Output is correct
41 Correct 327 ms 352 KB Output is correct
42 Correct 89 ms 336 KB Output is correct
43 Correct 185 ms 356 KB Output is correct
44 Correct 109 ms 316 KB Output is correct
45 Correct 186 ms 352 KB Output is correct
46 Correct 300 ms 352 KB Output is correct
47 Correct 295 ms 384 KB Output is correct
48 Correct 98 ms 336 KB Output is correct
49 Correct 310 ms 336 KB Output is correct
50 Correct 316 ms 316 KB Output is correct
51 Correct 208 ms 356 KB Output is correct
52 Correct 130 ms 364 KB Output is correct
53 Correct 393 ms 456 KB Output is correct
54 Correct 316 ms 352 KB Output is correct
55 Correct 343 ms 352 KB Output is correct
56 Correct 426 ms 352 KB Output is correct
57 Correct 359 ms 352 KB Output is correct
58 Correct 416 ms 352 KB Output is correct
59 Correct 290 ms 336 KB Output is correct
60 Correct 274 ms 356 KB Output is correct