CSES - NOI 2019 - Results
Submission details
Task:Thieves and Prisons
Sender:Nicolai Epshtein
Submission time:2019-03-06 15:57:32 +0200
Language:Python3
Status:READY
Result:8
Feedback
groupverdictscore
#1ACCEPTED8
#20
#30
#40
#50
Test results
testverdicttimegroup
#1ACCEPTED0.04 s2, 4, 5details
#2ACCEPTED0.05 s2, 4, 5details
#3ACCEPTED0.05 s2, 4, 5details
#4ACCEPTED0.04 s2, 4, 5details
#5ACCEPTED0.04 s2, 4, 5details
#6ACCEPTED0.04 s4, 5details
#7ACCEPTED0.04 s4, 5details
#8ACCEPTED0.04 s4, 5details
#9ACCEPTED0.04 s1, 3, 4, 5details
#10ACCEPTED0.04 s1, 3, 4, 5details
#11ACCEPTED0.04 s1, 3, 4, 5details
#12ACCEPTED0.06 s1, 3, 4, 5details
#13ACCEPTED0.04 s1, 3, 4, 5details
#14ACCEPTED0.05 s1, 3, 4, 5details
#15ACCEPTED0.04 s1, 3, 4, 5details
#16ACCEPTED0.06 s1, 3, 4, 5details
#17ACCEPTED0.05 s1, 2, 3, 4, 5details
#18ACCEPTED0.06 s1, 3, 4, 5details
#190.48 s2, 5details
#200.47 s2, 5details
#210.49 s2, 5details
#220.36 s5details
#230.35 s5details
#24ACCEPTED0.06 s3, 4, 5details
#25ACCEPTED0.06 s3, 4, 5details
#26ACCEPTED0.06 s3, 4, 5details
#27ACCEPTED0.06 s3, 4, 5details
#28--4, 5details
#29--4, 5details
#30--4, 5details
#31--4, 5details
#32--2, 4, 5details
#33--2, 4, 5details
#34--2, 4, 5details
#35--2, 4, 5details
#360.41 s3, 5details
#370.41 s3, 5details
#380.41 s3, 5details
#390.39 s3, 5details
#40--5details
#41--5details
#42--5details
#43--5details
#44--2, 5details
#45--2, 5details
#46--2, 5details
#47--2, 5details

Code

n, k, m = [int(x) for x in input().split(" ")]
events = []
for i in range(m):
	events.append(input().split(" "))

thieves = {str(i+1) for i in range(n)}
prisons = [set() for _ in range(k)]
outcome = [None for _ in range(m)]

def check(current):
	event = events[current][0]
	thief = events[current][1]
	if thief in thieves:
		for i in range(k):
			if not None in outcome:
				break
			if event == "C":
				thieves.remove(thief)
				prisons[i].add(thief)
				outcome[current] = i+1
				if None in outcome:
					check(current+1)
				thieves.add(thief)
				prisons[i].remove(thief)
			elif event == "O":
				if len(prisons[i]) == 0:
					continue
				else:
					escaped = set()
					for n in prisons[i]:
						thieves.add(n)
						escaped.add(n)
					prisons[i] = set()
					outcome[current] = i+1
					if None in outcome:
						check(current+1)
					for n in escaped:
						prisons[i].add(n)

check(0)

if None in outcome:
	print("IMPOSSIBLE")
else:
	print(" ".join([str(x) for x in outcome]))

Test details

Test 1

Group: 2, 4, 5

Verdict: ACCEPTED

input
1 1 1
C 1

correct output

user output
1

Test 2

Group: 2, 4, 5

Verdict: ACCEPTED

input
1 1 1
O 1

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 3

Group: 2, 4, 5

Verdict: ACCEPTED

input
1 1 2
C 1
C 1

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 4

Group: 2, 4, 5

Verdict: ACCEPTED

input
1 1 2
C 1
O 1

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 5

Group: 2, 4, 5

Verdict: ACCEPTED

input
1 1 2
O 1
C 1

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 6

Group: 4, 5

Verdict: ACCEPTED

input
2 1 2
C 1
C 2

correct output
1 1 

user output
1 1

Test 7

Group: 4, 5

Verdict: ACCEPTED

input
2 1 2
C 1
O 1

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 8

Group: 4, 5

Verdict: ACCEPTED

input
2 1 2
C 1
O 2

correct output
1 1 

user output
1 1

Test 9

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 5
C 1
C 2
O 3
C 1
...

correct output
1 1 1 1 1 

user output
1 1 1 1 1

Test 10

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 5
C 1
C 2
O 3
O 3
...

correct output
2 1 2 1 1 

user output
1 2 1 2 1

Test 11

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 5
C 1
C 2
O 3
O 1
...

correct output
2 1 2 1 1 

user output
1 2 1 2 1

Test 12

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 5
C 1
C 2
O 1
O 3
...

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 13

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 4
C 1
O 2
C 1
O 3

correct output
1 1 1 1 

user output
1 1 1 1

Test 14

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 4
C 1
O 2
C 2
O 1

correct output
1 1 1 1 

user output
1 1 1 1

Test 15

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 3
C 1
C 2
C 3

correct output
1 1 1 

user output
1 1 1

Test 16

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
3 2 3
O 1
C 2
C 3

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 17

Group: 1, 2, 3, 4, 5

Verdict: ACCEPTED

input
2 2 7
C 1
O 2
O 2
O 2
...

correct output
IMPOSSIBLE

user output
IMPOSSIBLE

Test 18

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
4 2 5
C 2
O 3
C 1
O 4
...

correct output
1 1 1 1 1 

user output
1 1 1 1 1

Test 19

Group: 2, 5

Verdict:

input
100000 100000 100000
C 1
C 2
C 3
C 4
...

correct output
50000 49999 49998 49997 49996 ...

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  [Previous line repeated 994 more times]
  File "input/code.py", line 14, in check
    for i in range(k):
RecursionError: maximum recursion depth exceeded in comparison

Test 20

Group: 2, 5

Verdict:

input
100000 100000 100000
C 1
C 2
C 3
C 4
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  [Previous line repeated 994 more times]
  File "input/code.py", line 14, in check
    for i in range(k):
RecursionError: maximum recursion depth exceeded in comparison

Test 21

Group: 2, 5

Verdict:

input
100000 100000 100000
C 1
C 2
C 3
C 4
...

correct output
20000 20000 20000 20000 20000 ...

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  [Previous line repeated 994 more times]
  File "input/code.py", line 14, in check
    for i in range(k):
RecursionError: maximum recursion depth exceeded in comparison

Test 22

Group: 5

Verdict:

input
100000 100 100000
C 1
C 2
C 3
C 4
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  [Previous line repeated 994 more times]
  File "input/code.py", line 14, in check
    for i in range(k):
RecursionError: maximum recursion depth exceeded in comparison

Test 23

Group: 5

Verdict:

input
100000 99 100000
C 1
C 2
C 3
C 4
...

correct output
IMPOSSIBLE

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  [Previous line repeated 994 more times]
  File "input/code.py", line 14, in check
    for i in range(k):
RecursionError: maximum recursion depth exceeded in comparison

Test 24

Group: 3, 4, 5

Verdict: ACCEPTED

input
500 2 500
C 384
O 62
C 387
O 473
...

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

user output
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

Test 25

Group: 3, 4, 5

Verdict: ACCEPTED

input
500 2 500
C 384
O 62
C 387
O 473
...

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

user output
1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 ...

Test 26

Group: 3, 4, 5

Verdict: ACCEPTED

input
500 2 500
C 384
O 62
C 387
O 473
...

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

user output
1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 ...

Test 27

Group: 3, 4, 5

Verdict: ACCEPTED

input
500 2 500
C 384
O 62
C 387
C 473
...

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

user output
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

Test 28

Group: 4, 5

Verdict:

input
500 250 500
C 384
O 62
C 387
O 473
...

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

user output
(empty)

Test 29

Group: 4, 5

Verdict:

input
500 250 500
C 384
O 62
C 387
O 473
...

correct output
1 1 1 1 1 1 1 1 1 1 1 1 2 1 3 ...

user output
(empty)

Test 30

Group: 4, 5

Verdict:

input
500 250 500
C 384
O 62
C 387
O 473
...

correct output
1 1 1 1 1 3 2 3 3 2 2 2 5 4 2 ...

user output
(empty)

Test 31

Group: 4, 5

Verdict:

input
500 250 500
C 384
O 62
C 387
C 473
...

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

user output
(empty)

Test 32

Group: 2, 4, 5

Verdict:

input
500 500 500
C 384
O 62
C 387
O 473
...

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

user output
(empty)

Test 33

Group: 2, 4, 5

Verdict:

input
500 500 500
C 384
O 62
C 387
O 473
...

correct output
1 1 1 1 1 1 1 1 1 1 1 1 2 1 3 ...

user output
(empty)

Test 34

Group: 2, 4, 5

Verdict:

input
500 500 500
C 384
O 62
C 387
O 473
...

correct output
1 1 1 1 2 1 3 3 3 2 2 2 2 4 5 ...

user output
(empty)

Test 35

Group: 2, 4, 5

Verdict:

input
500 500 500
C 384
O 62
C 387
C 473
...

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

user output
(empty)

Test 36

Group: 3, 5

Verdict:

input
100000 2 100000
C 89384
O 54062
C 85387
O 53318
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", l

Test 37

Group: 3, 5

Verdict:

input
100000 2 100000
C 89384
O 54062
C 85387
O 53318
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", l

Test 38

Group: 3, 5

Verdict:

input
100000 2 100000
C 89384
O 54062
C 85387
O 53318
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", l

Test 39

Group: 3, 5

Verdict:

input
100000 2 100000
C 89384
O 54062
C 85387
C 53318
...

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

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 40, in <module>
    check(0)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  [Previous line repeated 10 more times]
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 36, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  File "input/code.py", line 22, in check
    check(current+1)
  [Previous line repeated 5 more times]
  File

Test 40

Group: 5

Verdict:

input
100000 50000 100000
C 89384
O 54062
C 85387
O 53318
...

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

user output
(empty)

Test 41

Group: 5

Verdict:

input
100000 50000 100000
C 89384
O 54062
C 85387
O 53318
...

correct output
1 1 1 1 1 1 1 1 1 1 1 1 3 2 1 ...

user output
(empty)

Test 42

Group: 5

Verdict:

input
100000 50000 100000
C 89384
O 54062
C 85387
O 53318
...

correct output
1 1 1 1 1 3 2 3 3 3 3 3 3 4 5 ...

user output
(empty)

Test 43

Group: 5

Verdict:

input
100000 50000 100000
C 89384
O 54062
C 85387
C 53318
...

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

user output
(empty)

Test 44

Group: 2, 5

Verdict:

input
100000 100000 100000
C 89384
O 54062
C 85387
O 53318
...

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

user output
(empty)

Test 45

Group: 2, 5

Verdict:

input
100000 100000 100000
C 89384
O 54062
C 85387
O 53318
...

correct output
1 1 1 1 1 1 1 1 1 1 1 1 3 2 1 ...

user output
(empty)

Test 46

Group: 2, 5

Verdict:

input
100000 100000 100000
C 89384
O 54062
C 85387
O 53318
...

correct output
1 1 1 1 2 1 3 3 3 3 3 3 4 5 3 ...

user output
(empty)

Test 47

Group: 2, 5

Verdict:

input
100000 100000 100000
C 89384
O 54062
C 85387
C 53318
...

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

user output
(empty)