CSES - Putka Open 2020 – 1/5

Submission details
Task:	Lista
Sender:	jnalanko
Submission time:	2020-09-05 02:56:09 +0300
Language:	C++ (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	0.03 s	1, 2, 3	details
#2	ACCEPTED	0.03 s	1, 2, 3	details
#3	ACCEPTED	0.03 s	1, 2, 3	details
#4	ACCEPTED	0.03 s	1, 2, 3	details
#5	ACCEPTED	0.03 s	1, 2, 3	details
#6	ACCEPTED	0.03 s	1, 2, 3	details
#7	ACCEPTED	0.03 s	1, 2, 3	details
#8	ACCEPTED	0.03 s	1, 2, 3	details
#9	ACCEPTED	0.03 s	1, 2, 3	details
#10	ACCEPTED	0.03 s	2, 3	details
#11	ACCEPTED	0.03 s	2, 3	details
#12	ACCEPTED	0.03 s	2, 3	details
#13	ACCEPTED	0.03 s	2, 3	details
#14	ACCEPTED	0.03 s	2, 3	details
#15	ACCEPTED	0.03 s	2, 3	details
#16	ACCEPTED	0.03 s	3	details
#17	ACCEPTED	0.03 s	3	details
#18	ACCEPTED	0.04 s	3	details
#19	ACCEPTED	0.04 s	3	details
#20	ACCEPTED	0.04 s	3	details
#21	ACCEPTED	0.04 s	3	details

Compiler report

input/code.cpp: In function 'void dfs(const std::vector<std::vector<long long int> >&)':
input/code.cpp:17:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(ans.size() == n){
        ~~~~~~~~~~~^~~~

Code

#include <iostream>
#include <vector>
#include <set>
#include <queue>
#include <algorithm>

using namespace std;

typedef long long LL;

vector<bool> isprime;
vector<LL> ans;
set<LL> used;
LL n;

void dfs(const vector<vector<LL> >& adj){
    if(ans.size() == n){
        for(LL x : ans) cout << x << " ";
        exit(0);
    }
    for(LL x : adj[ans.back()]){
        if(used.count(x) == 0){
            used.insert(x);
            ans.push_back(x);
            dfs(adj);
            used.erase(x);
            ans.pop_back();
        }
        
    }  
}


int main(){
    isprime.resize(2010, true);
    isprime[0] = false; isprime[1] = false;
    for(LL i = 2; i <= 2000; i++){
        for(LL d = 2; d < i; d++){
            if(i % d == 0) isprime[i] = false;
        }
    }

    cin >> n;    

    vector<vector<LL> > adj(2001);
    for(LL x = 1; x <= n; x++){
        for(LL y = 1; y <= n; y++){
            if(x != y && isprime[x+y]) adj[x].push_back(y);
        }
        std::reverse(adj[x].begin(), adj[x].end());
        //std::random_shuffle(adj[x].begin(), adj[x].end());
    }

    ans.push_back(1);
    used.insert(1);

    dfs(adj);
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
`2` view save

correct output
`1 2` view save

user output
`1 2` view save

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
`3` view save

correct output
`1 2 3` view save

user output
`1 2 3` view save

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
`4` view save

correct output
`1 2 3 4` view save

user output
`1 4 3 2` 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
`1 4 3 2 5` 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
`1 6 5 2 3 4` 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
`1 6 7 4 3 2 5` 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
`1 6 7 4 3 8 5 2` 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
`1 6 7 4 9 8 5 2 3` 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
`1 10 9 8 5 6 7 4 3 2` 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
`1 18 19 12 17 14 15 16 13 10 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
`1 52 55 54 53 56 51 50 47 42 4...` 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
`1 70 69 68 63 64 67 60 53 56 5...` 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
`1 72 67 70 69 68 71 66 73 76 7...` 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
`1 88 85 82 81 86 87 80 83 90 8...` 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
`1 100 99 98 95 96 97 94 87 92 ...` 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
`1 150 143 140 153 154 139 144 ...` 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
`1 430 429 428 425 414 415 424 ...` 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
`1 618 619 612 625 624 613 616 ...` 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
`1 828 829 808 819 818 809 812 ...` 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
`1 882 877 876 883 870 871 862 ...` 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
`1 996 997 1000 999 998 995 992...` 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 (jnalanko)