CSES - Putka Open 2020 – 1/5 - Results
Submission details
Task:Lista
Sender:jnalanko
Submission time:2020-09-05 02:56:09 +0300
Language:C++ (C++17)
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED21
#2ACCEPTED38
#3ACCEPTED41
Test results
testverdicttimegroup
#1ACCEPTED0.03 s1, 2, 3details
#2ACCEPTED0.03 s1, 2, 3details
#3ACCEPTED0.03 s1, 2, 3details
#4ACCEPTED0.03 s1, 2, 3details
#5ACCEPTED0.03 s1, 2, 3details
#6ACCEPTED0.03 s1, 2, 3details
#7ACCEPTED0.03 s1, 2, 3details
#8ACCEPTED0.03 s1, 2, 3details
#9ACCEPTED0.03 s1, 2, 3details
#10ACCEPTED0.03 s2, 3details
#11ACCEPTED0.03 s2, 3details
#12ACCEPTED0.03 s2, 3details
#13ACCEPTED0.03 s2, 3details
#14ACCEPTED0.03 s2, 3details
#15ACCEPTED0.03 s2, 3details
#16ACCEPTED0.03 s3details
#17ACCEPTED0.03 s3details
#18ACCEPTED0.04 s3details
#19ACCEPTED0.04 s3details
#20ACCEPTED0.04 s3details
#21ACCEPTED0.04 s3details

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

correct output
1 2 

user output
1 2 

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
3

correct output
1 2 3 

user output
1 2 3 

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
4

correct output
1 2 3 4 

user output
1 4 3 2 

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
5

correct output
3 4 1 2 5 

user output
1 4 3 2 5 

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
6

correct output
3 4 1 2 5 6 

user output
1 6 5 2 3 4 

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
7

correct output
3 4 1 2 5 6 7 

user output
1 6 7 4 3 2 5 

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

input
8

correct output
7 6 5 2 1 4 3 8 

user output
1 6 7 4 3 8 5 2 

Test 8

Group: 1, 2, 3

Verdict: ACCEPTED

input
9

correct output
7 6 5 2 1 4 3 8 9 

user output
1 6 7 4 9 8 5 2 3 

Test 9

Group: 1, 2, 3

Verdict: ACCEPTED

input
10

correct output
7 6 5 2 1 4 3 8 9 10 

user output
1 10 9 8 5 6 7 4 3 2 

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
1 18 19 12 17 14 15 16 13 10 9...

Test 11

Group: 2, 3

Verdict: ACCEPTED

input
56

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

user output
1 52 55 54 53 56 51 50 47 42 4...
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
1 70 69 68 63 64 67 60 53 56 5...
Truncated

Test 13

Group: 2, 3

Verdict: ACCEPTED

input
76

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

user output
1 72 67 70 69 68 71 66 73 76 7...
Truncated

Test 14

Group: 2, 3

Verdict: ACCEPTED

input
90

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

user output
1 88 85 82 81 86 87 80 83 90 8...
Truncated

Test 15

Group: 2, 3

Verdict: ACCEPTED

input
100

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

user output
1 100 99 98 95 96 97 94 87 92 ...
Truncated

Test 16

Group: 3

Verdict: ACCEPTED

input
154

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

user output
1 150 143 140 153 154 139 144 ...
Truncated

Test 17

Group: 3

Verdict: ACCEPTED

input
430

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

user output
1 430 429 428 425 414 415 424 ...
Truncated

Test 18

Group: 3

Verdict: ACCEPTED

input
629

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

user output
1 618 619 612 625 624 613 616 ...
Truncated

Test 19

Group: 3

Verdict: ACCEPTED

input
833

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

user output
1 828 829 808 819 818 809 812 ...
Truncated

Test 20

Group: 3

Verdict: ACCEPTED

input
885

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

user output
1 882 877 876 883 870 871 862 ...
Truncated

Test 21

Group: 3

Verdict: ACCEPTED

input
1000

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

user output
1 996 997 1000 999 998 995 992...
Truncated