CSES - Putka Open 2020 – 1/5

Submission details
Task:	Lista
Sender:	Olli
Submission time:	2020-09-06 14:22:39 +0300
Language:	C++ (C++11)
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	0.01 s	3	details
#20	ACCEPTED	0.01 s	3	details
#21	ACCEPTED	0.01 s	3	details

Compiler report

input/code.cpp: In function 'void dfs(int)':
input/code.cpp:44:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 0; j < g[i].size(); ++j) {
                 ~~^~~~~~~~~~~~~

Code

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

const int N = 2222;

bool pr[N];

vector<int> g[N];

void sieve() {
	for(int i = 2; i < N; ++i) {
		pr[i] = true;
	}
	for(int i = 2; i < N; ++i) {
		if(!pr[i]) continue;
		for(int j = i*i; j < N; j+= i) {
			pr[j] = false;
		}
	}
}

bool z[N];
int cur;

int n;

vector<int> v;

bool f;

void dfs(int i) {
	if(f) return;
	if(z[i]) return;
	z[i] = true;
	++cur;
	v.push_back(i);
	if(cur == n) {
		f = true;
		return;
	}
	for(int j = 0; j < g[i].size(); ++j) {
		int k = g[i][j];
		if(z[k]) continue;
		dfs(k);
		if(f) return;
	}
	if(f) return;
	--cur;
	v.pop_back();
	z[i] = false;
}


int main() {
	cin >> n;
	sieve();
	for(int i = 1; i <= n; ++i) {
		for(int j = 1; j <= n; ++j) {
			if(i == j) continue;
			if(pr[i+j]) {
				g[i].push_back(j);
			}
		}
	}

	for(int i = 1; i <= n; ++i) {
		reverse(g[i].begin(), g[i].end());
	}
/*	
	for(int i = 1; i <= n; ++i) {
		random_shuffle(g[i].begin(), g[i].end());
	}
*/
	dfs(n);

	for(int i = 0; i < n; ++i) {
		cout << v[i] << " ";
	}
	cout << "\n";
}

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
`7 6 5 2 3 4 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 6 7 4 3 2 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 9 8 5 6 7 4 3 2 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
`19 18 13 16 15 14 17 12 11 8 9...` 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 53 54 55 52 51 50 47 42 41 ...` Truncated

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
`70 69 68 63 64 67 60 53 56 57 ...` Truncated

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 75 74 65 72 67 70 69 68 71 ...` Truncated

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
`90 89 84 83 80 87 86 81 82 85 ...` Truncated

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
`100 99 98 95 96 97 94 87 92 89...` Truncated

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
`154 153 140 143 150 133 148 14...` Truncated

Test 17

Group: 3

Verdict: ACCEPTED

input
`430` view save

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

user output
`430 429 428 425 414 415 424 40...` Truncated

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
`629 620 617 614 623 626 611 61...` Truncated

Test 19

Group: 3

Verdict: ACCEPTED

input
`833` view save

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

user output
`833 830 827 810 817 820 807 81...` Truncated

Test 20

Group: 3

Verdict: ACCEPTED

input
`885` view save

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

user output
`885 874 879 880 873 868 865 88...` Truncated

Test 21

Group: 3

Verdict: ACCEPTED

input
`1000` view save

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

user output
`1000 999 998 995 992 987 986 9...` Truncated

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 (Olli)