CSES - Datatähti Open 2021

CSES - Datatähti Open 2021 - Results

Submission details
Task:	Split in Three
Sender:	flash_0408
Submission time:	2021-01-31 17:13:23 +0200
Language:	C++17
Status:	READY
Result:	22

Feedback
group	verdict	score
#1	ACCEPTED	22
#2	WRONG ANSWER	0

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	WRONG ANSWER	0.01 s	2	details
#10	WRONG ANSWER	0.01 s	2	details
#11	WRONG ANSWER	0.01 s	2	details
#12	ACCEPTED	0.01 s	2	details
#13	WRONG ANSWER	0.01 s	2	details
#14	WRONG ANSWER	0.01 s	2	details
#15	ACCEPTED	0.01 s	2	details

Code

#include <bits/stdc++.h>

using namespace std;

int32_t main(){
	ios_base::sync_with_stdio(false); 
	cin.tie(NULL); 
	
	int n;
	cin >> n; 

	if((n*(n+1)/2) % 3){
		cout << "IMPOSSIBLE\n"; 
		return 0; 
	}
	int sum = (n*(n+1))/2; 
	for(int mask1 = 0; mask1 < (1 << n); mask1++){
		for(int mask2 = 0; mask2 < (1 << n); mask2++){
			if(mask1 & mask2)
				continue; 
			int sum1 = 0, sum2 = 0; 
			for(int i = 0; i < n; i++){
				if(mask1 & (1 << i))
					sum1 += i+1; 
				if(mask2 & (1 << i))
					sum2 += i+1; 
			}

			if(sum1 + 1 == sum2 && sum - sum1 - sum2 == sum2 + 1){
				vector<int> ans(n); 

				for(int i = 0; i < n; i++){
					if(mask1 & (1 << i))
						ans[i] = 1; 
					else if(mask2 & (1 << i))
						ans[i] = 2;
					else ans[i] = 3; 
				}

				for(int v : ans)
					cout << v << ' '; 

				return 0; 
			}
		}
	}
	return 0; 
}

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
`2 1 3 1 3 2` 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
`1 1 1 2 1 3 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
`2 1 1 1 1 2 3 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: WRONG ANSWER

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
(empty)

Test 10

Group: 2

Verdict: WRONG ANSWER

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
(empty)

Test 11

Group: 2

Verdict: WRONG ANSWER

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
(empty)

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: WRONG ANSWER

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
(empty)

Test 14

Group: 2

Verdict: WRONG ANSWER

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
(empty)

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 (flash_0408)