CSES - NOI 2019

CSES - NOI 2019 - Results

Submission details
Task:	Thieves and Prisons
Sender:	Olli Järviniemi
Submission time:	2019-03-06 13:51:28 +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	0.03 s	2, 4, 5	details
#2	ACCEPTED	0.02 s	2, 4, 5	details
#3	ACCEPTED	0.02 s	2, 4, 5	details
#4	ACCEPTED	0.03 s	2, 4, 5	details
#5	ACCEPTED	0.04 s	2, 4, 5	details
#6	ACCEPTED	0.03 s	4, 5	details
#7	ACCEPTED	0.03 s	4, 5	details
#8	ACCEPTED	0.03 s	4, 5	details
#9	ACCEPTED	0.02 s	1, 3, 4, 5	details
#10	ACCEPTED	0.03 s	1, 3, 4, 5	details
#11	ACCEPTED	0.03 s	1, 3, 4, 5	details
#12	ACCEPTED	0.02 s	1, 3, 4, 5	details
#13	ACCEPTED	0.03 s	1, 3, 4, 5	details
#14	ACCEPTED	0.04 s	1, 3, 4, 5	details
#15	ACCEPTED	0.03 s	1, 3, 4, 5	details
#16	ACCEPTED	0.03 s	1, 3, 4, 5	details
#17	ACCEPTED	0.03 s	1, 2, 3, 4, 5	details
#18	ACCEPTED	0.03 s	1, 3, 4, 5	details
#19	ACCEPTED	0.17 s	2, 5	details
#20	ACCEPTED	0.19 s	2, 5	details
#21	ACCEPTED	0.20 s	2, 5	details
#22	ACCEPTED	0.17 s	5	details
#23	ACCEPTED	0.15 s	5	details
#24	WRONG ANSWER	0.03 s	3, 4, 5	details
#25	WRONG ANSWER	0.03 s	3, 4, 5	details
#26	WRONG ANSWER	0.03 s	3, 4, 5	details
#27	WRONG ANSWER	0.03 s	3, 4, 5	details
#28	WRONG ANSWER	0.03 s	4, 5	details
#29	WRONG ANSWER	0.02 s	4, 5	details
#30	WRONG ANSWER	0.04 s	4, 5	details
#31	WRONG ANSWER	0.04 s	4, 5	details
#32	WRONG ANSWER	0.03 s	2, 4, 5	details
#33	WRONG ANSWER	0.03 s	2, 4, 5	details
#34	WRONG ANSWER	0.04 s	2, 4, 5	details
#35	WRONG ANSWER	0.03 s	2, 4, 5	details
#36	WRONG ANSWER	0.10 s	3, 5	details
#37	WRONG ANSWER	0.10 s	3, 5	details
#38	WRONG ANSWER	0.10 s	3, 5	details
#39	WRONG ANSWER	0.11 s	3, 5	details
#40	WRONG ANSWER	0.11 s	5	details
#41	WRONG ANSWER	0.10 s	5	details
#42	WRONG ANSWER	0.10 s	5	details
#43	WRONG ANSWER	0.10 s	5	details
#44	WRONG ANSWER	0.09 s	2, 5	details
#45	WRONG ANSWER	0.10 s	2, 5	details
#46	WRONG ANSWER	0.11 s	2, 5	details
#47	WRONG ANSWER	0.10 s	2, 5	details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:129:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < del[i].size(); ++j) {
                  ~~^~~~~~~~~~~~~~~
input/code.cpp:157:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < event.size(); ++i) {
                 ~~^~~~~~~~~~~~~~
input/code.cpp:175:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < del[i].size(); ++j) {
                  ~~^~~~~~~~~~~~~~~
input/code.cpp:217:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j = 0; j < cont[ans[i-1]].size(); ++j) {
                   ~~^~~~~~~~~~~~~~~~~~~~~~~
input/code.cpp:230:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < ans.size(); ++i) {
                 ~~^~~~~~~~~~~~
input/code.c...

Code

#include <iostream>
#include <set>
#include <vector>
#include <algorithm>

using namespace std;

const int N = 1e5 + 5;

typedef pair<int, int> pii;
typedef long long ll;

set<int> per[N];

int pri[N];
int mi[N];
int w[N];

vector<int> del[N];
set<int> fre;


vector<int> loc[N];

bool impri[N];
vector<int> cont[N];

int fi[N];

int label[N];

int main() {
	int n, k, m;
	cin >> n >> k >> m;
	vector<int> g;
	vector<char> t;
	g.push_back(-1);
	t.push_back(-1);
	for(int i = 1; i <= m; ++i) {
		char a; int b;
		cin >> a >> b;
		t.push_back(a);
		g.push_back(b);
		per[b].insert(i);
		if(b > n) {
			cout << "IMPOSSIBLE\n";
			return 0;
		}
	}


	if(t[1] == 'C') {
		pri[1] = 1;
	} else {
		cout << "IMPOSSIBLE\n";
		return 0;
	}

	for(int i = 2; i <= m; ++i) {
		if(t[i] == 'C') {
			pri[i] = pri[i-1] + 1;
		} else {
			pri[i] = pri[i-1] - 1;
		}
	}
	mi[m] = pri[m];
	for(int i = m-1; i >= 1; --i) {
		mi[i] = min(mi[i+1], pri[i]);
	}

	if(mi[1] < 0) {
		cout << "IMPOSSIBLE\n";
		return 0;
	}

	int ext = 0;
	int curPri = 0;
	for(int i = 1; i <= m; ++i) {
		if(t[i] == 'C') {
			++curPri;
			continue;
		}
		w[i] = min(mi[i] + 1 - ext, curPri);
		curPri -= w[i];
		ext += w[i] - 1;

	}

	set<pair<int, int> > ord;
	set<int> people;

	for(int i = 1; i <= m; ++i) {
		if(t[i] == 'C') {
			if(people.count(g[i]) > 0) {
				cout << "IMPOSSIBLE\n";
				return 0;
			}
			people.insert(g[i]);
			set<int>::iterator it = per[g[i]].upper_bound(i);
			if(it == per[g[i]].end()) {
				ord.insert({N, i});
			} else {
				ord.insert({*(per[g[i]].upper_bound(i)), i});
//				ord.insert({g[i], g[i]});
			}
			continue;
		}
		for(int j = 1; j <= w[i]; ++j) {
			auto it = ord.begin();
			int abb = (*it).second;
			del[i].push_back(abb);
	//		cout << "Adding " << abb << "\n";
			people.erase((*it).second);
			ord.erase(it);

		}
	}

	for(int i = 1; i <= k; ++i) {
		fre.insert(i);
	}

	vector<pair<int, int> > event;

	for(int i = 1; i <= m; ++i) {
		if(t[i] == 'C') continue;

		fi[i] = N;
		for(int j = 0; j < del[i].size(); ++j) {
			int mm = del[i][j];
			fi[i] = min(fi[i], mm);
		}
		event.push_back({fi[i], i});
		event.push_back({i, i});
	}

	sort(event.begin(), event.end());

/*	for(int i = 0; i < event.size(); ++i) {
		cout << event[i].first << " " << event[i].second << "\n";
	}

	for(int i = 1; i <= m; ++i) {
		cout << w[i] << " ";
	}
	cout << "\n";
	for(int i = 1; i <= m; ++i) {
		cout << "Opening: ";
		for(int j = 0; j < del[i].size(); ++j) {
			cout << del[i][j] << " ";
		}
		cout << "\n";
	}

	cout << "\n\n";
*/
	for(int i = 0; i < event.size(); ++i) {
		int a = event[i].first;
		int b = event[i].second;
		if(a == b) {
			fre.insert(label[a]);
			continue;
		}
		if(fre.size() == 0) {
			cout << "IMPOSSIBLE\n";
			return 0;
		}
		int lab = *(fre.begin());
		label[b] = lab;
		fre.erase(fre.begin());
	}

	for(int i = 1; i <= m; ++i) {
		if(t[i] == 'C') continue;
		for(int j = 0; j < del[i].size(); ++j) {
			int mm = del[i][j];
			loc[g[mm]].push_back(label[i]);
		}
		loc[g[i]].push_back(label[i]);
	}


	for(int i = 1; i <= m; ++i) {
		reverse(loc[i].begin(), loc[i].end());
	}

/*	for(int i = 1; i <= n; ++i) {
		cout << "The prisons for " << i << ": ";
		for(int j = 0; j < loc[i].size(); ++j) {
			cout << loc[i][j] << " ";
		}
		cout << "\n";
	}
*/

	vector<int> ans;
	for(int i = 1; i <= m; ++i) {
		if(loc[g[i]].size() == 0) {
			ans.push_back(1);
		} else {
			ans.push_back(loc[g[i]][loc[g[i]].size() - 1]);
			loc[g[i]].pop_back();
		}

		if(t[i] == 'C') {
			cont[ans[i-1]].push_back(g[i]);
			if(impri[g[i]]) {
				cout << "IMPOSSIBLE\n";
				return 0;
			}
			impri[g[i]] = true;
		} else {
			if(impri[g[i]]) {
				cout << "IMPOSSIBLE\n";
				return 0;
			}
			for(int j = 0; j < cont[ans[i-1]].size(); ++j) {
				int abb = cont[ans[i-1]][j];
				if(!impri[abb]) {
					cout << "IMPOSSIBLE\n";
					return 0;
				}
				impri[abb] = false;
			}
			cont[ans[i-1]].clear();

		}
	}

	for(int i = 0; i < ans.size(); ++i) {
		cout << ans[i] << " ";
	}

	cout << "\n";
	return 0;

	cout << "\n\n";
	for(int i = 1; i <= m; ++i) {
		cout << del[i].size() << ": ";
		for(int j = 0; j < del[i].size(); ++j) {
			cout << del[i][j] << " ";
		}
		cout << "\n";
	}



}

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: ACCEPTED

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

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 4

Group: 2, 4, 5

Verdict: ACCEPTED

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

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` 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: ACCEPTED

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

correct output
`1 1` view save

user output
`1 1` 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: ACCEPTED

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

correct output
`1 1` view save

user output
`1 1` 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
`1 2 1 2 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
`1 2 1 2 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: ACCEPTED

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 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` Truncated

Test 21

Group: 2, 5

Verdict: ACCEPTED

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 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` Truncated

Test 22

Group: 5

Verdict: ACCEPTED

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
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` Truncated

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: WRONG ANSWER

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
`IMPOSSIBLE` view save

Test 33

Group: 2, 4, 5

Verdict: WRONG ANSWER

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
`IMPOSSIBLE` view save

Test 34

Group: 2, 4, 5

Verdict: WRONG ANSWER

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
`IMPOSSIBLE` view save

Test 35

Group: 2, 4, 5

Verdict: WRONG ANSWER

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
`IMPOSSIBLE` view save

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: WRONG ANSWER

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
`IMPOSSIBLE` view save

Test 45

Group: 2, 5

Verdict: WRONG ANSWER

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
`IMPOSSIBLE` view save

Test 46

Group: 2, 5

Verdict: WRONG ANSWER

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
`IMPOSSIBLE` view save

Test 47

Group: 2, 5

Verdict: WRONG ANSWER

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
`IMPOSSIBLE` view save

NOI 2019

Thieves and Prisons

Compiler report

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 (Olli Järviniemi)