CSES - Datatähti 2021 loppu - Results
Submission details
Task:Kolmijako
Sender:T
Submission time:2021-01-23 19:34:03 +0200
Language:C++11
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED22
#2ACCEPTED78
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2details
#2ACCEPTED0.01 s1, 2details
#3ACCEPTED0.01 s1, 2details
#4ACCEPTED0.01 s1, 2details
#5ACCEPTED0.01 s1, 2details
#6ACCEPTED0.01 s1, 2details
#7ACCEPTED0.01 s1, 2details
#8ACCEPTED0.01 s1, 2details
#9ACCEPTED0.01 s2details
#10ACCEPTED0.01 s2details
#11ACCEPTED0.01 s2details
#12ACCEPTED0.01 s2details
#13ACCEPTED0.01 s2details
#14ACCEPTED0.01 s2details
#15ACCEPTED0.01 s2details

Code

/**
 * Datathti 2021 loppu
 * 358
 * B
 * Kolmijako
 * @author TRS
 */
//Include
#include <bits/stdc++.h>
//Definitions
using namespace std;
//Constants
#define infinity 0x3f3f3f3f
#define linfinity 0x3f3f3f3f3f3f3f3f
#define MOD 1000000007
int n;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>n;
    if ((n * (n + 1) / 2) % 3 != 0) {
        cout<<"IMPOSSIBLE"<<"\n";
        return 0;
    }
    if (n == 3) {
        cout<<"1 2 3";
        return 0;
    }
    if (n == 5) {
        cout<<"1 3 1 3 2";
        return 0;
    }
    if (n == 6) {
        cout<<"2 1 3 1 3 2";
        return 0;
    }
    int k = (n + 2) / 3;
    int results[k * 3];
    if (k % 2 == 0) {
        results[0] = 2;
        results[1] = 1;
        results[2] = 3;
        results[3] = 1;
        results[4] = 3;
        results[5] = 2;
        for (int i = 6; i < k * 3; i++) {
            if (i % 6 == 0) {
                results[i] = 1;
            }
            if (i % 6 == 1) {
                results[i] = 2;
            }
            if (i % 6 == 2) {
                results[i] = 3;
            }
            if (i % 6 == 3) {
                results[i] = 3;
            }
            if (i % 6 == 4) {
                results[i] = 2;
            }
            if (i % 6 == 5) {
                results[i] = 1;
            }
        }
    }
    else {
        results[0] = 1;
        results[1] = 2;
        results[2] = 3;
        for (int i = 3; i < k * 3; i++) {
            if ((i - 3) % 6 == 0) {
                results[i] = 1;
            }
            if ((i - 3) % 6 == 1) {
                results[i] = 2;
            }
            if ((i - 3) % 6 == 2) {
                results[i] = 3;
            }
            if ((i - 3) % 6 == 3) {
                results[i] = 3;
            }
            if ((i - 3) % 6 == 4) {
                results[i] = 2;
            }
            if ((i - 3) % 6 == 5) {
                results[i] = 1;
            }
        }
    }
    for (int i = k * 3 - n; i < k * 3; i++) {
        cout<<results[i]<<" ";
    }
    return 0;
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
3

correct output
1 2 3 

user output
1 2 3

Test 2

Group: 1, 2

Verdict: ACCEPTED

input
4

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 3

Group: 1, 2

Verdict: ACCEPTED

input
5

correct output
1 3 1 3 2 

user output
1 3 1 3 2

Test 4

Group: 1, 2

Verdict: ACCEPTED

input
6

correct output
1 3 2 2 1 3 

user output
2 1 3 1 3 2

Test 5

Group: 1, 2

Verdict: ACCEPTED

input
7

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 6

Group: 1, 2

Verdict: ACCEPTED

input
8

correct output
2 3 1 2 3 3 2 1 

user output
2 3 1 2 3 3 2 1 

Test 7

Group: 1, 2

Verdict: ACCEPTED

input
9

correct output
1 2 3 1 2 3 3 2 1 

user output
1 2 3 1 2 3 3 2 1 

Test 8

Group: 1, 2

Verdict: ACCEPTED

input
10

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 9

Group: 2

Verdict: ACCEPTED

input
42

correct output
1 3 2 2 1 3 1 2 3 3 2 1 1 2 3 ...

user output
2 1 3 1 3 2 1 2 3 3 2 1 1 2 3 ...

Test 10

Group: 2

Verdict: ACCEPTED

input
95

correct output
1 3 1 3 2 1 2 3 3 2 1 1 2 3 3 ...

user output
1 3 1 3 2 1 2 3 3 2 1 1 2 3 3 ...

Test 11

Group: 2

Verdict: ACCEPTED

input
96

correct output
1 3 2 2 1 3 1 2 3 3 2 1 1 2 3 ...

user output
2 1 3 1 3 2 1 2 3 3 2 1 1 2 3 ...

Test 12

Group: 2

Verdict: ACCEPTED

input
97

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 13

Group: 2

Verdict: ACCEPTED

input
98

correct output
2 3 1 2 3 3 2 1 1 2 3 3 2 1 1 ...

user output
2 3 1 2 3 3 2 1 1 2 3 3 2 1 1 ...

Test 14

Group: 2

Verdict: ACCEPTED

input
99

correct output
1 2 3 1 2 3 3 2 1 1 2 3 3 2 1 ...

user output
1 2 3 1 2 3 3 2 1 1 2 3 3 2 1 ...

Test 15

Group: 2

Verdict: ACCEPTED

input
100

correct output
IMPOSSIBLE

user output
IMPOSSIBLE