CSES - Datatähti Open 2021 - Results
Submission details
Task:Split in Three
Sender:taulant
Submission time:2021-01-31 15:19:32 +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

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"

int32_t main(){
 ios::sync_with_stdio(0); cin.tie(0);
 int n; cin >> n;
 vector<int> v(n+1);
 int s = (n+1)*n/2;
 if(s % 3) cout << "IMPOSSIBLE" << endl;
 else {
  int a, b, c;
  b = s/3;
  a = b-1;
  c = b+1;
  for(int i=n; i && a; --i){
   if(!v[i] && i<=a) v[i] = 1, a-=i;
  }
  for(int i=n; i && b; --i){
   if(!v[i] && i<=b) v[i] = 2, b-=i;
  }
  for(int i=n; i && c; --i){
   if(!v[i] && i<=c) v[i] = 3, c-=i;
  }
  for(int i=1; i<=n; ++i) cout << v[i] << " ";
  cout << endl;
 }
}

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
3 3 3 1 2 

Test 4

Group: 1, 2

Verdict: ACCEPTED

input
6

correct output
1 3 2 2 1 3 

user output
3 2 3 3 2 1 

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
3 3 1 3 2 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
3 3 3 3 1 3 2 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
3 3 3 3 3 3 3 3 3 3 3 3 3 3 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
3 3 3 3 3 3 3 3 3 3 3 3 3 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
3 3 3 3 3 3 3 3 3 3 3 3 3 3 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
3 3 3 3 1 3 3 3 3 3 3 3 3 3 3 ...

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
3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 ...

Test 15

Group: 2

Verdict: ACCEPTED

input
100

correct output
IMPOSSIBLE

user output
IMPOSSIBLE