CSES - Aalto Competitive Programming 2024 - wk2 - Mon - Results
Submission details
Task:Building Teams
Sender:Rafal1
Submission time:2024-09-09 17:41:45 +0300
Language:Python3 (CPython3)
Status:READY
Result:
Test results
testverdicttime
#1ACCEPTED0.02 sdetails
#2ACCEPTED0.02 sdetails
#3ACCEPTED0.02 sdetails
#4ACCEPTED0.02 sdetails
#5ACCEPTED0.02 sdetails
#60.69 sdetails
#70.69 sdetails
#80.69 sdetails
#90.70 sdetails
#100.71 sdetails
#11ACCEPTED0.02 sdetails
#12ACCEPTED0.02 sdetails

Code

n = input().split(" ")
m = int(n[1])
n = int(n[0])

connect = []
visited = [-1]
adj = [[]]
x = 0

for i in range(n):
    visited.append(0)
    adj.append([])

for i in range(m):
    f = input().split(" ")
    f = [int(f[0]), int(f[1])]

    adj[f[0]].append(f[1])
    adj[f[1]].append(f[0])


def dfs(s, t):
    if visited[s] != 0:
        if visited[s] == t:
            global x
            x = 1
        return
    visited[s] = t%2 + 1
    for c in adj[s]:
        dfs(c, t%2 + 1)

for i, p in enumerate(visited):
    if p == 0:
        dfs(i, 1)

if x == 1:
    print("IMPOSSIBLE")
else:
    for i in visited[1:-1]:
        print(i, end=" ")
    print(visited[-1])

Test details

Test 1

Verdict: ACCEPTED

input
10 20
3 4
8 10
3 7
1 8
...

correct output
1 1 1 2 2 1 2 2 2 1 

user output
2 2 2 1 1 2 1 1 1 2

Test 2

Verdict: ACCEPTED

input
10 20
1 3
8 10
2 4
6 8
...

correct output
1 1 2 2 1 1 1 2 1 1 

user output
2 2 1 1 2 2 2 1 2 2

Test 3

Verdict: ACCEPTED

input
10 20
7 10
3 10
9 10
2 10
...

correct output
1 2 2 1 1 1 2 1 2 1 

user output
2 1 1 2 2 2 1 2 1 2

Test 4

Verdict: ACCEPTED

input
10 20
2 4
2 10
7 10
4 6
...

correct output
1 2 1 1 2 2 2 1 2 1 

user output
2 1 2 2 1 1 1 2 1 2

Test 5

Verdict: ACCEPTED

input
10 20
3 5
8 10
9 10
1 8
...

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 6

Verdict:

input
100000 200000
47355 96505
90709 92058
735 80715
91802 94265
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "/box/input/code.py", line 34, in <module>
    d...

Test 7

Verdict:

input
100000 200000
59991 95794
95150 96051
78453 94730
90411 95523
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "/box/input/code.py", line 34, in <module>
    d...

Test 8

Verdict:

input
100000 200000
89827 96402
65137 86792
80965 94708
19479 48078
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "/box/input/code.py", line 34, in <module>
    d...

Test 9

Verdict:

input
100000 200000
72952 83723
66197 70052
2949 52160
55753 95651
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "/box/input/code.py", line 34, in <module>
    d...

Test 10

Verdict:

input
100000 200000
38942 96755
70049 82663
7746 72732
87819 99029
...

correct output
IMPOSSIBLE

user output
(empty)

Error:
Traceback (most recent call last):
  File "/box/input/code.py", line 34, in <module>
    d...

Test 11

Verdict: ACCEPTED

input
5 4
1 2
3 4
4 5
5 3

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 12

Verdict: ACCEPTED

input
4 5
1 2
1 4
2 3
2 4
...

correct output
IMPOSSIBLE

user output
IMPOSSIBLE