CSES - Putka Open 2020 – 1/5

CSES - Putka Open 2020 – 1/5 - Results

Submission details
Task:	Lista
Sender:	ollpu
Submission time:	2020-09-04 19:36:58 +0300
Language:	C++17
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	21
#2	ACCEPTED	38
#3	ACCEPTED	41

Test results
test	verdict	time	group
#1	ACCEPTED	0.01 s	1, 2, 3	details
#2	ACCEPTED	0.01 s	1, 2, 3	details
#3	ACCEPTED	0.01 s	1, 2, 3	details
#4	ACCEPTED	0.01 s	1, 2, 3	details
#5	ACCEPTED	0.01 s	1, 2, 3	details
#6	ACCEPTED	0.01 s	1, 2, 3	details
#7	ACCEPTED	0.01 s	1, 2, 3	details
#8	ACCEPTED	0.01 s	1, 2, 3	details
#9	ACCEPTED	0.01 s	1, 2, 3	details
#10	ACCEPTED	0.01 s	2, 3	details
#11	ACCEPTED	0.01 s	2, 3	details
#12	ACCEPTED	0.01 s	2, 3	details
#13	ACCEPTED	0.01 s	2, 3	details
#14	ACCEPTED	0.01 s	2, 3	details
#15	ACCEPTED	0.01 s	2, 3	details
#16	ACCEPTED	0.01 s	3	details
#17	ACCEPTED	0.01 s	3	details
#18	ACCEPTED	0.01 s	3	details
#19	ACCEPTED	0.02 s	3	details
#20	ACCEPTED	0.02 s	3	details
#21	ACCEPTED	0.02 s	3	details

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` view save

correct output
`1 2` view save

user output
`2 1` view save

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
`3` view save

correct output
`1 2 3` view save

user output
`3 2 1` view save

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
`4` view save

correct output
`1 2 3 4` view save

user output
`4 3 2 1` view save

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
`5` view save

correct output
`3 4 1 2 5` view save

user output
`5 2 3 4 1` view save

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
`6` view save

correct output
`3 4 1 2 5 6` view save

user output
`6 5 2 3 4 1` view save

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
`7` view save

correct output
`3 4 1 2 5 6 7` view save

user output
`5 6 7 4 3 2 1` view save

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
`8` view save

correct output
`7 6 5 2 1 4 3 8` view save

user output
`8 5 6 7 4 3 2 1` view save

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
`9` view save

correct output
`7 6 5 2 1 4 3 8 9` view save

user output
`9 8 5 2 3 4 7 6 1` view save

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

input
`10` view save

correct output
`7 6 5 2 1 4 3 8 9 10` view save

user output
`10 7 4 9 8 3 2 5 6 1` view save

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
`19` view save

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

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

Test 11

Group: 2, 3

Verdict: ACCEPTED

input
`56` view save

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

user output
`56 47 42 41 26 17 12 11 6 5 54...` view save

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
`70` view save

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

user output
`68 69 44 45 38 15 14 3 2 39 34...` view save

Test 13

Group: 2, 3

Verdict: ACCEPTED

input
`76` view save

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

user output
`76 63 46 33 40 27 34 13 10 7 4...` view save

Test 14

Group: 2, 3

Verdict: ACCEPTED

input
`90` view save

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

user output
`68 81 58 69 32 39 20 21 2 51 2...` view save

Test 15

Group: 2, 3

Verdict: ACCEPTED

input
`100` view save

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

user output
`98 95 86 81 32 65 8 15 2 11 92...` view save

Test 16

Group: 3

Verdict: ACCEPTED

input
`154` view save

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

user output
`140 129 122 89 104 27 62 9 20 ...` view save

Test 17

Group: 3

Verdict: ACCEPTED

input
`430` view save

correct output
`427 426 371 372 367 376 375 35...` view save

user output
`304 429 214 327 172 187 94 97 ...` view save

Test 18

Group: 3

Verdict: ACCEPTED

input
`629` view save

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

user output
`585 478 561 392 555 322 489 17...` view save

Test 19

Group: 3

Verdict: ACCEPTED

input
`833` view save

correct output
`829 828 793 574 523 516 515 51...` view save

user output
`627 812 615 746 417 692 305 40...` view save

Test 20

Group: 3

Verdict: ACCEPTED

input
`885` view save

correct output
`883 724 723 878 881 726 721 71...` view save

user output
`787 784 313 430 303 406 163 19...` view save

Test 21

Group: 3

Verdict: ACCEPTED

input
`1000` view save

correct output
`997 996 737 884 995 492 991 20...` view save

user output
`892 855 452 435 362 357 242 32...` view save

Putka Open 2020 – 1/5

Lista

Compiler report

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Tasks

Submissions (ollpu)