CSES - Putka Open 2025 – 1/5

Submission details
Task:	Järjestys
Sender:	Lieska
Submission time:	2025-09-06 22:36:15 +0300
Language:	C++ (C++11)
Status:	READY
Result:	30

Feedback
group	verdict	score
#1	ACCEPTED	10
#2	ACCEPTED	10
#3	ACCEPTED	10
#4	TIME LIMIT EXCEEDED	0
#5	TIME LIMIT EXCEEDED	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 4, 5	details
#2	ACCEPTED	0.00 s	1, 4, 5	details
#3	ACCEPTED	0.00 s	1, 4, 5	details
#4	ACCEPTED	0.00 s	1, 4, 5	details
#5	ACCEPTED	0.00 s	1, 4, 5	details
#6	ACCEPTED	0.00 s	1, 2, 4, 5	details
#7	ACCEPTED	0.00 s	1, 3, 4, 5	details
#8	ACCEPTED	0.00 s	1, 4, 5	details
#9	ACCEPTED	0.01 s	2, 4, 5	details
#10	ACCEPTED	0.01 s	3, 4, 5	details
#11	TIME LIMIT EXCEEDED	--	4, 5	details
#12	TIME LIMIT EXCEEDED	--	4, 5	details
#13	TIME LIMIT EXCEEDED	--	4, 5	details
#14	TIME LIMIT EXCEEDED	--	4, 5	details
#15	ACCEPTED	0.03 s	2, 5	details
#16	ACCEPTED	0.04 s	3, 5	details
#17	TIME LIMIT EXCEEDED	--	5	details
#18	TIME LIMIT EXCEEDED	--	5	details
#19	TIME LIMIT EXCEEDED	--	5	details
#20	TIME LIMIT EXCEEDED	--	5	details
#21	TIME LIMIT EXCEEDED	--	5	details
#22	TIME LIMIT EXCEEDED	--	5	details

Code

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;



void f(multiset<pair<int, int>> &s, int &prev_end, vector<pair<int, int>> &answer, bool &success){
    if (s.size()==0) {
        success = true;
        return;
    }
    for (auto u:s){
        if (u.first >= prev_end && success == false){
            answer.push_back(u);
            int COPY_prev_end = prev_end;
            prev_end = u.second;
            multiset<pair<int, int>> s1;
            for (auto v:s){
                s1.insert(v);
            }
            s1.erase(s1.find(u));
            f(s1, prev_end, answer, success);
            if (success == false) {
                prev_end = COPY_prev_end;
                answer.pop_back();
            }
        }
    }
}

void test(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    multiset<pair<int, int>> s;
    bool x_at_most_y = true, y_at_most_x = true;
    for (int i=0; i<n; ++i){
        int a, b;
        cin >> a >> b;
        if (b < a) x_at_most_y = false;
        if (a < b) y_at_most_x = false;
        s.insert({a,b});
    }
    if (x_at_most_y){
        bool doable = true;
        int prev_end = 0;
        for (auto u:s){
            if (u.first >= prev_end){
                prev_end = u.second;
            }
            else {
                doable = false;
                break;
            }
        }
        if (doable){
            cout << "YES\n";
            for (auto u:s) cout << u.first << " " << u.second << "\n";
        }
        else cout << "NO\n";
    }
    else if (y_at_most_x){
        // Always doable
        cout << "YES\n";
        multiset<pair<int, int>> s1;
        for (auto u:s) s1.insert({u.second, u.first});
        for (auto u:s1) cout << u.second << " " << u.first << "\n";
    }
    else{
        // This one handles the case where n<=5.
        int prev_end = 0;
        bool success=false;
        vector<pair<int, int>> answer;
        f(s, prev_end, answer, success);
        if (success){
            cout << "YES\n";
            for (auto u:answer){
                cout << u.first << " " << u.second << "\n";
            }
        }
        else cout << "NO\n";
    }
}




int main(){
    int t;
    cin >> t;
    for (int i=0; i<t; ++i) test();
}

Test details

Test 1

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 1 74 75 1 100 43 ...` view save

correct output
`YES 74 75 YES 100 43 YES ...` view save

user output
`YES 74 75 YES 100 43 YES ...` Truncated

Test 2

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 2 80 54 51 61 2 ...` view save

correct output
`YES 51 61 80 54 YES 2 64 ...` view save

user output
`YES 51 61 80 54 YES 2 64 ...` Truncated

Test 3

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 3 3 74 91 45 100 24 ...` view save

correct output
`YES 3 74 100 24 91 45 YES ...` view save

user output
`YES 3 74 91 45 100 24 YES ...` Truncated

Test 4

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 4 88 50 62 41 12 86 ...` view save

correct output
`YES 12 86 88 50 62 41 66 93 ...` view save

user output
`YES 12 86 88 50 62 41 66 93 ...` Truncated

Test 5

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 5 82 80 80 92 5 22 ...` view save

correct output
`YES 5 22 94 13 82 80 80 92 ...` view save

user output
`YES 5 22 80 92 93 91 94 13 ...` Truncated

Test 6

Group: 1, 2, 4, 5

Verdict: ACCEPTED

input
`100 5 34 38 26 30 1 6 ...` view save

correct output
`YES 1 6 12 22 26 30 34 38 ...` view save

user output
`YES 1 6 12 22 26 30 34 38 ...` Truncated

Test 7

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`100 5 50 40 28 25 51 7 ...` view save

correct output
`YES 51 7 50 40 47 1 17 11 ...` view save

user output
`YES 47 1 51 7 17 11 28 25 ...` Truncated

Test 8

Group: 1, 4, 5

Verdict: ACCEPTED

input
`100 5 2 2 2 1 1 1 ...` view save

correct output
`YES 1 2 2 1 2 1 1 1 ...` view save

user output
`YES 1 1 1 2 2 1 2 1 ...` Truncated

Test 9

Group: 2, 4, 5

Verdict: ACCEPTED

input
`100 100 175870020 296379324 248160539 883842002 21934885 781732852 ...` view save

correct output
`NO YES 4976156 6890135 10553287 11923223 14617057 17728163 ...` view save

user output
`NO YES 4976156 6890135 10553287 11923223 14617057 17728163 ...` Truncated

Test 10

Group: 3, 4, 5

Verdict: ACCEPTED

input
`100 100 447597377 314433951 700232436 691277009 937268439 708165426 ...` view save

correct output
`YES 998963839 391778929 995772196 257222033 995754704 553123757 994629465 247775824 ...` view save

user output
`YES 131739372 728604 601509094 1962914 556280873 11961715 146964144 14060542 ...` Truncated

Test 11

Group: 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`100 100 1 1 1 2 2 1 ...` view save

correct output
`YES 1 2 2 1 1 2 2 2 ...` view save

user output
(empty)

Test 12

Group: 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`100 100 7 1 6 3 10 9 ...` view save

correct output
`YES 6 7 7 8 9 10 10 10 ...` view save

user output
(empty)

Test 13

Group: 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`100 100 51 5 85 77 91 84 ...` view save

correct output
`YES 100 24 100 25 100 3 100 6 ...` view save

user output
(empty)

Test 14

Group: 4, 5

Verdict: TIME LIMIT EXCEEDED

input
`100 100 823828194 863717310 593641073 340054211 420481158 965069109 ...` view save

correct output
`YES 999289319 634855378 996775156 433726648 983657502 55234695 981890636 112877413 ...` view save

user output
(empty)

Test 15

Group: 2, 5

Verdict: ACCEPTED

input
`100 500 88724450 89315226 266915464 267648621 189301651 189661541 ...` view save

correct output
`YES 764920 1459946 1936195 2832987 3691481 4085931 4991808 5840928 ...` view save

user output
`YES 764920 1459946 1936195 2832987 3691481 4085931 4991808 5840928 ...` Truncated

Test 16

Group: 3, 5

Verdict: ACCEPTED

input
`100 500 763682761 317584504 756010800 260162861 435911339 78070399 ...` view save

correct output
`YES 998768285 3307355 998714926 628486754 997115613 820932481 993320616 554600893 ...` view save

user output
`YES 946780840 936351 325383021 2215164 998768285 3307355 684692765 3941186 ...` Truncated

Test 17

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`100 500 2 2 2 1 1 2 ...` view save

correct output
`YES 1 2 2 2 2 1 1 2 ...` view save

user output
(empty)

Test 18

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`100 500 10 6 10 10 9 10 ...` view save

correct output
`YES 2 3 3 4 4 5 5 6 ...` view save

user output
(empty)

Test 19

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`100 500 85 87 89 70 70 92 ...` view save

correct output
`YES 96 97 100 67 100 10 100 97 ...` view save

user output
(empty)

Test 20

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`100 500 861154169 119512584 569086662 606567153 288230434 322196278 ...` view save

correct output
`YES 999945324 969534372 999738857 240617694 999244114 722161553 999207839 557351400 ...` view save

user output
(empty)

Test 21

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`100 500 116439250 401518028 280329609 193466222 674040956 209050570 ...` view save

correct output
`NO YES 773701149 773852119 987509190 315670966 977413249 510418200 ...` view save

user output
(empty)

Test 22

Group: 5

Verdict: TIME LIMIT EXCEEDED

input
`100 500 934181189 942499518 684836806 395802802 957884803 570946201 ...` view save

correct output
`YES 999772640 505132174 999111650 140844643 999028633 888134186 999020109 291046771 ...` view save

user output
(empty)

Putka Open 2025 – 1/5

Järjestys

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

Test 22

Tasks

Submissions (Lieska)