CSES - Datatähti Open 2021

CSES - Datatähti Open 2021 - Results

Submission details
Task:	Split in Three
Sender:	ritul_kr_singh
Submission time:	2021-01-30 17:17:41 +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;
#define int long long

signed main(){
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    int n; cin >> n;
    int a[n+1];
    for(int& i : a) i = 3;
    if(n%6==0){
        int b=n/6;
        for(int i=1; i<=b; ++i){
            a[i] = 1;
            a[n+1-i] = 1;
        }
        for(int i=b+1; i<=b+b; ++i){
            a[i] = 2;
            a[n+1-i] = 2;
        }
        a[1] = 2;
        a[2] = 1;
    }
    if(n%6==2){
        int b=n/6;
        for(int i=1; i<=b; ++i){
            a[i+2] = 1;
            a[n+1-i] = 1;
        }
        for(int i=b+1; i<=b+b; ++i){
            a[i+2] = 2;
            a[n+1-i] = 2;
        }
        a[1] = 1;
        a[2] = 2;
    }
    if(n%6==3){
        int b=n/6;
        for(int i=1; i<=b; ++i){
            a[i+3] = 1;
            a[n+1-i] = 1;
        }
        for(int i=b+1; i<=b+b; ++i){
            a[i+3] = 2;
            a[n+1-i] = 2;
        }
        a[1] = 1;
        a[2] = 2;
        a[3] = 3;
    }
    if(n%6==5){
        int b=n/6;
        for(int i=1; i<=b; ++i){
            a[i+5] = 1;
            a[n+1-i] = 1;
        }
        for(int i=b+1; i<=b+b; ++i){
            a[i+5] = 2;
            a[n+1-i] = 2;
        }
        a[1] = 1;
        a[2] = 1;
        a[3] = 1;
        a[4] = 2;
        a[5] = 3;
    }
    if(n%3==1){
        cout << "IMPOSSIBLE";
    }else{
        int todo[4];
        pair<int, int> sum[3] = {{0, 1}, {0, 2}, {0, 3}};
        for(int i=1; i<=n; ++i){
            sum[a[i]-1].first += i;
        }
        sort(sum, sum+3);
        for(int i=0; i<3; ++i){
            todo[sum[i].second] = i+1;
        }
        for(int i=1; i<n; ++i){
            cout << todo[a[i]] << " ";
        }
        cout << todo[a[n]];

    }
}

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
`3 3 3 1 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
`1 3 2 2 1 3` 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 2 3 1 1 3 2` 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 1 2 3 3 2 1` 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 1 1 1 1 1 1 3 3 3 3 3 3 3 2 ...` 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
`3 3 3 1 2 3 3 3 3 3 3 3 3 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 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` 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 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` 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 1 1 1 1 1 1 1 1 1 1 1 1 ...` Truncated

Test 15

Group: 2

Verdict: ACCEPTED

input
`100` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Datatähti Open 2021

Split in Three

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 (ritul_kr_singh)