CSES - Putka Open 2020 – 1/5 - Results
Submission details
Task:Lista
Sender:ollpu
Submission time:2020-09-04 19:36:58 +0300
Language:C++ (C++17)
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED21
#2ACCEPTED38
#3ACCEPTED41
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#2ACCEPTED0.01 s1, 2, 3details
#3ACCEPTED0.01 s1, 2, 3details
#4ACCEPTED0.01 s1, 2, 3details
#5ACCEPTED0.01 s1, 2, 3details
#6ACCEPTED0.01 s1, 2, 3details
#7ACCEPTED0.01 s1, 2, 3details
#8ACCEPTED0.01 s1, 2, 3details
#9ACCEPTED0.01 s1, 2, 3details
#10ACCEPTED0.01 s2, 3details
#11ACCEPTED0.01 s2, 3details
#12ACCEPTED0.01 s2, 3details
#13ACCEPTED0.01 s2, 3details
#14ACCEPTED0.01 s2, 3details
#15ACCEPTED0.01 s2, 3details
#16ACCEPTED0.01 s3details
#17ACCEPTED0.01 s3details
#18ACCEPTED0.01 s3details
#19ACCEPTED0.02 s3details
#20ACCEPTED0.02 s3details
#21ACCEPTED0.02 s3details

Compiler report

input/code.cpp: In function 'bool h(int, int)':
input/code.cpp:35:18: warning: unused variable '_' [-Wunused-variable]
   for (auto [_, j] : opt) {
                  ^

Code

#include <bits/stdc++.h>
using namespace std;
const int N = 2000;
int p[N];
int v[N][N];
int d[N];
int z[N];
int n;
bool h(int i, int s=1) {
  if (s == n) {
    cout << i << " ";
    return 1;
  }
  z[i] = 1;
  vector<pair<int, int>> opt;
  for (int j = 1; j <= n; ++j) {
    if (z[j]) continue;
    if (v[i][j]) {
      v[i][j] = 0;
      v[j][i] = 0;
      d[j]--;
      if (!d[j] && s != n-1) {
        return 0;
      }
      opt.emplace_back(d[j], j);
    }
  }
  sort(opt.begin(), opt.end());
  for (auto pr : opt) {
    if (h(pr.second, s+1)) {
      cout << i << " ";
      return 1;
    }
  }
  for (auto [_, j] : opt) {
    v[i][j] = 1;
    v[j][i] = 1;
    d[j]++;
  }
  z[i] = 0;
  return 0;
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> n;
  for (int i = 2; i < N; ++i) {
    if (!p[i]) {
      for (int j = 2*i; j < N; j += i) {
        p[j] = 1;
      }
    }
  }
  for (int i = 1; i <= n; ++i) {
    for (int j = 1; j <= n; ++j) {
      if (i == j || p[i+j]) continue;
      v[i][j] = 1;
      d[i]++;
    }
  }
  h(1);
  cout << endl;
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
2

correct output
1 2 

user output
2 1 

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
3

correct output
1 2 3 

user output
3 2 1 

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
4

correct output
1 2 3 4 

user output
4 3 2 1 

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
5

correct output
3 4 1 2 5 

user output
5 2 3 4 1 

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
6

correct output
3 4 1 2 5 6 

user output
6 5 2 3 4 1 

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
7

correct output
3 4 1 2 5 6 7 

user output
5 6 7 4 3 2 1 

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
8

correct output
7 6 5 2 1 4 3 8 

user output
8 5 6 7 4 3 2 1 

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
9

correct output
7 6 5 2 1 4 3 8 9 

user output
9 8 5 2 3 4 7 6 1 

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

input
10

correct output
7 6 5 2 1 4 3 8 9 10 

user output
10 7 4 9 8 3 2 5 6 1 

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
19

correct output
17 14 3 8 15 16 13 6 5 2 1 4 9...

user output
15 14 9 4 3 8 5 2 17 12 11 18 ...

Test 11

Group: 2, 3

Verdict: ACCEPTED

input
56

correct output
55 54 53 50 51 52 49 48 13 28 ...

user output
56 47 42 41 26 17 12 11 6 5 54...
Truncated

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
70

correct output
67 4 1 2 9 32 35 38 65 66 61 4...

user output
68 69 44 45 38 15 14 3 2 39 34...
Truncated

Test 13

Group: 2, 3

Verdict: ACCEPTED

input
76

correct output
73 66 61 42 59 54 53 50 51 52 ...

user output
76 63 46 33 40 27 34 13 10 7 4...
Truncated

Test 14

Group: 2, 3

Verdict: ACCEPTED

input
90

correct output
87 86 11 18 29 44 45 16 55 58 ...

user output
68 81 58 69 32 39 20 21 2 51 2...
Truncated

Test 15

Group: 2, 3

Verdict: ACCEPTED

input
100

correct output
97 96 95 78 25 82 81 56 71 68 ...

user output
98 95 86 81 32 65 8 15 2 11 92...
Truncated

Test 16

Group: 3

Verdict: ACCEPTED

input
154

correct output
151 6 5 92 137 134 149 84 143 ...

user output
140 129 122 89 104 27 62 9 20 ...
Truncated

Test 17

Group: 3

Verdict: ACCEPTED

input
430

correct output
427 426 371 372 367 376 375 35...

user output
304 429 214 327 172 187 94 97 ...
Truncated

Test 18

Group: 3

Verdict: ACCEPTED

input
629

correct output
627 404 227 146 83 150 77 74 3...

user output
585 478 561 392 555 322 489 17...
Truncated

Test 19

Group: 3

Verdict: ACCEPTED

input
833

correct output
829 828 793 574 523 516 515 51...

user output
627 812 615 746 417 692 305 40...
Truncated

Test 20

Group: 3

Verdict: ACCEPTED

input
885

correct output
883 724 723 878 881 726 721 71...

user output
787 784 313 430 303 406 163 19...
Truncated

Test 21

Group: 3

Verdict: ACCEPTED

input
1000

correct output
997 996 737 884 995 492 991 20...

user output
892 855 452 435 362 357 242 32...
Truncated