CSES - NOI 2019 Open

CSES - NOI 2019 Open - Results

Submission details
Task:	Thieves and Prisons
Sender:	pwild
Submission time:	2019-03-10 01:05:23 +0200
Language:	C++
Status:	READY
Result:	8

Feedback
group	verdict	score
#1	ACCEPTED	8
#2	WRONG ANSWER	0
#3	WRONG ANSWER	0
#4	WRONG ANSWER	0
#5	WRONG ANSWER	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.01 s	2, 4, 5	details
#2	ACCEPTED	0.01 s	2, 4, 5	details
#3	WRONG ANSWER	0.02 s	2, 4, 5	details
#4	WRONG ANSWER	0.01 s	2, 4, 5	details
#5	ACCEPTED	0.01 s	2, 4, 5	details
#6	WRONG ANSWER	0.01 s	4, 5	details
#7	ACCEPTED	0.02 s	4, 5	details
#8	WRONG ANSWER	0.02 s	4, 5	details
#9	ACCEPTED	0.02 s	1, 3, 4, 5	details
#10	ACCEPTED	0.01 s	1, 3, 4, 5	details
#11	ACCEPTED	0.02 s	1, 3, 4, 5	details
#12	ACCEPTED	0.02 s	1, 3, 4, 5	details
#13	ACCEPTED	0.02 s	1, 3, 4, 5	details
#14	ACCEPTED	0.01 s	1, 3, 4, 5	details
#15	ACCEPTED	0.01 s	1, 3, 4, 5	details
#16	ACCEPTED	0.01 s	1, 3, 4, 5	details
#17	ACCEPTED	0.01 s	1, 2, 3, 4, 5	details
#18	ACCEPTED	0.01 s	1, 3, 4, 5	details
#19	ACCEPTED	0.11 s	2, 5	details
#20	WRONG ANSWER	0.14 s	2, 5	details
#21	WRONG ANSWER	0.12 s	2, 5	details
#22	WRONG ANSWER	0.04 s	5	details
#23	ACCEPTED	0.04 s	5	details
#24	WRONG ANSWER	0.02 s	3, 4, 5	details
#25	WRONG ANSWER	0.02 s	3, 4, 5	details
#26	WRONG ANSWER	0.01 s	3, 4, 5	details
#27	WRONG ANSWER	0.02 s	3, 4, 5	details
#28	WRONG ANSWER	0.01 s	4, 5	details
#29	WRONG ANSWER	0.02 s	4, 5	details
#30	WRONG ANSWER	0.01 s	4, 5	details
#31	WRONG ANSWER	0.02 s	4, 5	details
#32	ACCEPTED	0.02 s	2, 4, 5	details
#33	ACCEPTED	0.01 s	2, 4, 5	details
#34	ACCEPTED	0.01 s	2, 4, 5	details
#35	ACCEPTED	0.01 s	2, 4, 5	details
#36	WRONG ANSWER	0.04 s	3, 5	details
#37	WRONG ANSWER	0.04 s	3, 5	details
#38	WRONG ANSWER	0.04 s	3, 5	details
#39	WRONG ANSWER	0.04 s	3, 5	details
#40	WRONG ANSWER	0.03 s	5	details
#41	WRONG ANSWER	0.04 s	5	details
#42	WRONG ANSWER	0.04 s	5	details
#43	WRONG ANSWER	0.04 s	5	details
#44	ACCEPTED	0.12 s	2, 5	details
#45	ACCEPTED	0.11 s	2, 5	details
#46	ACCEPTED	0.12 s	2, 5	details
#47	ACCEPTED	0.16 s	2, 5	details

Code

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef pair<ll,ll> pll;
typedef vector<bool> vb;
const ll oo = 0x3f3f3f3f3f3f3f3f;
const double eps = 1e-9;
#define sz(c) ll((c).size())
#define all(c) begin(c), end(c)
#define FOR(i,a,b) for (ll i = (a); i < (b); i++)
#define FORD(i,a,b) for (ll i = (b)-1; i >= (a); i--)
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define eb emplace_back
#define xx first
#define yy second
#define has(c,i) ((c).find(i) != end(c))
#define TR(X) ({ if(1) cerr << "TR: " << (#X) << " = " << (X) << endl; })
 
struct event {
	bool is_cap;
	ll who;
};
 
ll n, k, m;
vector<event> events;
 
void fail() {
	cout << "IMPOSSIBLE" << endl;
	exit(0);
}
 
void solve1() {
	assert(k == 2);
	FOR(mask,0,1 << m) {
		bool ok = true;
		vl pos(n,-1);
		FOR(i,0,m) {
			event ev = events[i];
			ll p = (mask >> i) & 1;
			if (ev.is_cap) {
				if (pos[ev.who] != -1) ok = false;
				pos[ev.who] = p;
			} else {
				if (pos[ev.who] != -1) ok = false;
				bool freed = false;
				FOR(j,0,n) if (pos[j] == p) {
					pos[j] = -1;
					freed = true;
				}
				if (!freed) ok = false;
			}
		}
		if (ok) {
			FOR(i,0,m) {
				ll p = (mask >> i) & 1;
				cout << p+1 << " ";
			}
			cout << endl;
			return;
		}
	}
	cout << "IMPOSSIBLE" << endl;
}
 
void solve2() {
	assert(n == k);
	
	set<pll> in_prison;
 
	vector<queue<ll>> person_events(n);
	FOR(i,0,m) person_events[events[i].who].push(i);
 
	vl res, pos(n,-1);
	FOR(i,0,m) {
		auto ev = events[i];
		if (ev.is_cap) {
			if (pos[ev.who] != -1) fail();
			res.pb(ev.who);
			ll prio = oo;
			auto &q = person_events[ev.who];
			while (sz(q) && q.front() <= i) q.pop();
			if (sz(q)) prio = q.front();
			in_prison.emplace(prio,ev.who);
		} else {
			if (pos[ev.who] != -1) fail();
			if (in_prison.empty()) fail();
			
			ll free = begin(in_prison)->yy;
			res.pb(free);
			pos[free] = -1;
			in_prison.erase(begin(in_prison));
		}
	}
	for (ll x: res) cout << x+1 << " ";
	cout << endl;
}
 
int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	
	cin >> n >> k >> m;
	events.resize(m);
	for (auto &ev: events) {
		char c;
		cin >> c >> ev.who;
		ev.is_cap = c == 'C';
		ev.who--;
	}
 
	if (max(n,m) <= 10 && k == 2) {
		solve1();
	} else if (n == k) {
		solve2();
	} else {
		cout << "IMPOSSIBLE" << endl;
	}
}

Test details

Test 1

Group: 2, 4, 5

Verdict: ACCEPTED

input
`1 1 1 C 1` view save

correct output
`1` view save

user output
`1` view save

Test 2

Group: 2, 4, 5

Verdict: ACCEPTED

input
`1 1 1 O 1` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 3

Group: 2, 4, 5

Verdict: WRONG ANSWER

input
`1 1 2 C 1 C 1` view save

correct output
`IMPOSSIBLE` view save

user output
`1 1` view save

Test 4

Group: 2, 4, 5

Verdict: WRONG ANSWER

input
`1 1 2 C 1 O 1` view save

correct output
`IMPOSSIBLE` view save

user output
`1 1` view save

Test 5

Group: 2, 4, 5

Verdict: ACCEPTED

input
`1 1 2 O 1 C 1` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 6

Group: 4, 5

Verdict: WRONG ANSWER

input
`2 1 2 C 1 C 2` view save

correct output
`1 1` view save

user output
`IMPOSSIBLE` view save

Test 7

Group: 4, 5

Verdict: ACCEPTED

input
`2 1 2 C 1 O 1` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 8

Group: 4, 5

Verdict: WRONG ANSWER

input
`2 1 2 C 1 O 2` view save

correct output
`1 1` view save

user output
`IMPOSSIBLE` view save

Test 9

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 5 C 1 C 2 O 3 C 1 ...` view save

correct output
`1 1 1 1 1` view save

user output
`1 1 1 1 1` view save

Test 10

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 5 C 1 C 2 O 3 O 3 ...` view save

correct output
`2 1 2 1 1` view save

user output
`2 1 2 1 1` view save

Test 11

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 5 C 1 C 2 O 3 O 1 ...` view save

correct output
`2 1 2 1 1` view save

user output
`2 1 2 1 1` view save

Test 12

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 5 C 1 C 2 O 1 O 3 ...` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 13

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 4 C 1 O 2 C 1 O 3` view save

correct output
`1 1 1 1` view save

user output
`1 1 1 1` view save

Test 14

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 4 C 1 O 2 C 2 O 1` view save

correct output
`1 1 1 1` view save

user output
`1 1 1 1` view save

Test 15

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 3 C 1 C 2 C 3` view save

correct output
`1 1 1` view save

user output
`1 1 1` view save

Test 16

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`3 2 3 O 1 C 2 C 3` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 17

Group: 1, 2, 3, 4, 5

Verdict: ACCEPTED

input
`2 2 7 C 1 O 2 O 2 O 2 ...` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 18

Group: 1, 3, 4, 5

Verdict: ACCEPTED

input
`4 2 5 C 2 O 3 C 1 O 4 ...` view save

correct output
`1 1 1 1 1` view save

user output
`1 1 1 1 1` view save

Test 19

Group: 2, 5

Verdict: ACCEPTED

input
`100000 100000 100000 C 1 C 2 C 3 C 4 ...` view save

correct output
`50000 49999 49998 49997 49996 ...` view save

user output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` Truncated

Test 20

Group: 2, 5

Verdict: WRONG ANSWER

input
`100000 100000 100000 C 1 C 2 C 3 C 4 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` Truncated

Test 21

Group: 2, 5

Verdict: WRONG ANSWER

input
`100000 100000 100000 C 1 C 2 C 3 C 4 ...` view save

correct output
`20000 20000 20000 20000 20000 ...` view save

user output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` Truncated

Test 22

Group: 5

Verdict: WRONG ANSWER

input
`100000 100 100000 C 1 C 2 C 3 C 4 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 23

Group: 5

Verdict: ACCEPTED

input
`100000 99 100000 C 1 C 2 C 3 C 4 ...` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 24

Group: 3, 4, 5

Verdict: WRONG ANSWER

input
`500 2 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 25

Group: 3, 4, 5

Verdict: WRONG ANSWER

input
`500 2 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 ...` view save

user output
`IMPOSSIBLE` view save

Test 26

Group: 3, 4, 5

Verdict: WRONG ANSWER

input
`500 2 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 2 1 2 ...` view save

user output
`IMPOSSIBLE` view save

Test 27

Group: 3, 4, 5

Verdict: WRONG ANSWER

input
`500 2 500 C 384 O 62 C 387 C 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 28

Group: 4, 5

Verdict: WRONG ANSWER

input
`500 250 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 29

Group: 4, 5

Verdict: WRONG ANSWER

input
`500 250 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 2 1 3 ...` view save

user output
`IMPOSSIBLE` view save

Test 30

Group: 4, 5

Verdict: WRONG ANSWER

input
`500 250 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 3 2 3 3 2 2 2 5 4 2 ...` view save

user output
`IMPOSSIBLE` view save

Test 31

Group: 4, 5

Verdict: WRONG ANSWER

input
`500 250 500 C 384 O 62 C 387 C 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 32

Group: 2, 4, 5

Verdict: ACCEPTED

input
`500 500 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`384 384 387 387 191 191 173 17...` Truncated

Test 33

Group: 2, 4, 5

Verdict: ACCEPTED

input
`500 500 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 2 1 3 ...` view save

user output
`384 384 387 387 191 191 173 17...` Truncated

Test 34

Group: 2, 4, 5

Verdict: ACCEPTED

input
`500 500 500 C 384 O 62 C 387 O 473 ...` view save

correct output
`1 1 1 1 2 1 3 3 3 2 2 2 2 4 5 ...` view save

user output
`384 384 387 387 191 341 415 41...` Truncated

Test 35

Group: 2, 4, 5

Verdict: ACCEPTED

input
`500 500 500 C 384 O 62 C 387 C 473 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`384 384 387 473 249 268 5 10 4...` Truncated

Test 36

Group: 3, 5

Verdict: WRONG ANSWER

input
`100000 2 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 37

Group: 3, 5

Verdict: WRONG ANSWER

input
`100000 2 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 38

Group: 3, 5

Verdict: WRONG ANSWER

input
`100000 2 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 ...` view save

user output
`IMPOSSIBLE` view save

Test 39

Group: 3, 5

Verdict: WRONG ANSWER

input
`100000 2 100000 C 89384 O 54062 C 85387 C 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 40

Group: 5

Verdict: WRONG ANSWER

input
`100000 50000 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 41

Group: 5

Verdict: WRONG ANSWER

input
`100000 50000 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 3 2 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 42

Group: 5

Verdict: WRONG ANSWER

input
`100000 50000 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 3 2 3 3 3 3 3 3 4 5 ...` view save

user output
`IMPOSSIBLE` view save

Test 43

Group: 5

Verdict: WRONG ANSWER

input
`100000 50000 100000 C 89384 O 54062 C 85387 C 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`IMPOSSIBLE` view save

Test 44

Group: 2, 5

Verdict: ACCEPTED

input
`100000 100000 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`89384 89384 85387 85387 68691 ...` Truncated

Test 45

Group: 2, 5

Verdict: ACCEPTED

input
`100000 100000 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 3 2 1 ...` view save

user output
`89384 89384 85387 85387 68691 ...` Truncated

Test 46

Group: 2, 5

Verdict: ACCEPTED

input
`100000 100000 100000 C 89384 O 54062 C 85387 O 53318 ...` view save

correct output
`1 1 1 1 2 1 3 3 3 3 3 3 4 5 3 ...` view save

user output
`89384 89384 85387 85387 68691 ...` Truncated

Test 47

Group: 2, 5

Verdict: ACCEPTED

input
`100000 100000 100000 C 89384 O 54062 C 85387 C 53318 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`89384 89384 85387 53318 84358 ...` Truncated

NOI 2019 Open

Thieves and Prisons

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

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Test 26

Test 27

Test 28

Test 29

Test 30

Test 31

Test 32

Test 33

Test 34

Test 35

Test 36

Test 37

Test 38

Test 39

Test 40

Test 41

Test 42

Test 43

Test 44

Test 45

Test 46

Test 47

Tasks

Submissions (pwild)