CSES - Datatähti 2021 loppu

Submission details
Task:	Kolmijako
Sender:	Juho
Submission time:	2021-01-23 17:09:00 +0200
Language:	C++ (C++11)
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	22
#2	ACCEPTED	78

Test results
test	verdict	time	group
#1	ACCEPTED	0.01 s	1, 2	details
#2	ACCEPTED	0.01 s	1, 2	details
#3	ACCEPTED	0.01 s	1, 2	details
#4	ACCEPTED	0.01 s	1, 2	details
#5	ACCEPTED	0.01 s	1, 2	details
#6	ACCEPTED	0.01 s	1, 2	details
#7	ACCEPTED	0.01 s	1, 2	details
#8	ACCEPTED	0.01 s	1, 2	details
#9	ACCEPTED	0.01 s	2	details
#10	ACCEPTED	0.01 s	2	details
#11	ACCEPTED	0.01 s	2	details
#12	ACCEPTED	0.01 s	2	details
#13	ACCEPTED	0.01 s	2	details
#14	ACCEPTED	0.01 s	2	details
#15	ACCEPTED	0.01 s	2	details

Code

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

int n;
int main() {
    cin>>n;
    if(n%3==1){
        cout<<"IMPOSSIBLE";
    }else if(n%3==0){
        if(n%2==1){
            for(int i=1;i<=n;i++){
                if(i%3==2){
                    cout<<2<<" ";
                }else if(i%3==1){
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }else{
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }
            }
        }else{
            cout<<3<<" "<<2<<" "<<3<<" ";
            for(int i=4;i<=n;i++){
                if(i%3==2){
                    cout<<2<<" ";
                }else if(i%3==1){
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }else{
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }
            }
        }
    }else{
        if(n%2==0){
            cout<<2<<" "<<3<<" ";
            for(int i=1;i<=n-2;i++){
                if(i%3==2){
                    cout<<2<<" ";
                }else if(i%3==1){
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }else{
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }
            }
        }else{
            cout<<1<<" "<<3<<" "<<1<<" "<<3<<" "<<2<<" ";
            for(int i=1;i<=n-5;i++){
                if(i%3==2){
                    cout<<2<<" ";
                }else if(i%3==1){
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }else{
                    if((i/3)%2==0){
                        cout<<1<<" ";
                    }else{
                        cout<<3<<" ";
                    }
                }
            }
        }
    }
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
`3` view save

correct output
`1 2 3` view save

user output
`1 2 3` view save

Test 2

Group: 1, 2

Verdict: ACCEPTED

input
`4` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 3

Group: 1, 2

Verdict: ACCEPTED

input
`5` view save

correct output
`1 3 1 3 2` view save

user output
`1 3 1 3 2` view save

Test 4

Group: 1, 2

Verdict: ACCEPTED

input
`6` view save

correct output
`1 3 2 2 1 3` view save

user output
`3 2 3 3 2 1` view save

Test 5

Group: 1, 2

Verdict: ACCEPTED

input
`7` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 6

Group: 1, 2

Verdict: ACCEPTED

input
`8` view save

correct output
`2 3 1 2 3 3 2 1` view save

user output
`2 3 1 2 3 3 2 1` view save

Test 7

Group: 1, 2

Verdict: ACCEPTED

input
`9` view save

correct output
`1 2 3 1 2 3 3 2 1` view save

user output
`1 2 3 3 2 1 1 2 3` view save

Test 8

Group: 1, 2

Verdict: ACCEPTED

input
`10` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 9

Group: 2

Verdict: ACCEPTED

input
`42` view save

correct output
`1 3 2 2 1 3 1 2 3 3 2 1 1 2 3 ...` view save

user output
`3 2 3 3 2 1 1 2 3 3 2 1 1 2 3 ...` view save

Test 10

Group: 2

Verdict: ACCEPTED

input
`95` view save

correct output
`1 3 1 3 2 1 2 3 3 2 1 1 2 3 3 ...` view save

user output
`1 3 1 3 2 1 2 3 3 2 1 1 2 3 3 ...` Truncated

Test 11

Group: 2

Verdict: ACCEPTED

input
`96` view save

correct output
`1 3 2 2 1 3 1 2 3 3 2 1 1 2 3 ...` view save

user output
`3 2 3 3 2 1 1 2 3 3 2 1 1 2 3 ...` Truncated

Test 12

Group: 2

Verdict: ACCEPTED

input
`97` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 13

Group: 2

Verdict: ACCEPTED

input
`98` view save

correct output
`2 3 1 2 3 3 2 1 1 2 3 3 2 1 1 ...` view save

user output
`2 3 1 2 3 3 2 1 1 2 3 3 2 1 1 ...` Truncated

Test 14

Group: 2

Verdict: ACCEPTED

input
`99` view save

correct output
`1 2 3 1 2 3 3 2 1 1 2 3 3 2 1 ...` view save

user output
`1 2 3 3 2 1 1 2 3 3 2 1 1 2 3 ...` Truncated

Test 15

Group: 2

Verdict: ACCEPTED

input
`100` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Datatähti 2021 loppu

Kolmijako

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

Tasks

Submissions (Juho)