답안 #57721 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
57721	2018-07-15T22:13:53 Z	ksun48	Security Gate (JOI18_security_gate)	C++14	12 / 100	5000 ms	740 KB

securitygate

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;

const LL MOD = 1000000007;
const int MAXN = 110;
LL check(string s){
	vector<int> psums(1,0);
	for(int j = 0; j < s.size(); j++){
		if(s[j] == '('){
			psums.push_back(psums[psums.size() - 1] + 1);
		} else {
			psums.push_back(psums[psums.size() - 1] - 1);			
		}
	}
	int laste = psums.size() - 1;
	while(laste > 0 && psums[laste-1] >= psums[psums.size()-1]){
		laste--;
	}
	vector<int> endlists[2 * MAXN];
	vector<int> psumlists[2 * MAXN];
	int ecuridx[2 * MAXN];
	int pcuridx[2 * MAXN];
	for(int j = laste; j <= psums.size() - 1; j++){
		endlists[MAXN + psums[j]].push_back(j);
		ecuridx[MAXN + psums[j]] = 0;
	}
	for(int j = 0; j <= psums.size() - 1; j++){
		psumlists[MAXN + psums[j]].push_back(j);
		pcuridx[MAXN + psums[j]] = 0;
	}
	int a = psums[psums.size() - 1] / 2;
	for(int j = 0; j < psums.size(); j++){
		if(psums[j] < 0) break;
		int need = psums[j] + a;
		vector<int>& z = endlists[MAXN + need];
		int idx = ecuridx[MAXN + need];
		if(idx < z.size()){
			int e = z[idx];
			// check if all elements in [j,e] are <=
			vector<int>& w = psumlists[MAXN + 2 * psums[j] + 1];
			int idx2 = pcuridx[MAXN + 2 * psums[j] + 1];
			if(idx2 < w.size() && w[idx2] <= e){
			} else {
				return 1;
			}
		}
		if(j >= laste){
			ecuridx[MAXN + psums[j]]++;
		}
		pcuridx[MAXN + psums[j]]++;
	}
	return 0;
}

LL cnt(string s, int idx){
	if(idx == s.size()) return check(s);
	if(s[idx] != 'x'){
		return cnt(s, idx + 1);
	}
	string s1 = s;
	string s2 = s;
	s1[idx] = '(';
	s2[idx] = ')';
	for(int z = idx + 1; z <= s.size(); z++){
		if(z == s.size() || s[z] == 'x'){
			return (cnt(s1, z) + cnt(s2, z)) % MOD;
		}
	}
}
int main(){
	int n;
	string s;
	cin >> n >> s;
	if(n % 2 == 1){
		cout << 0 << '\n';
		return 0;
	}
	cout << cnt(s, 0) << '\n';
}

Compilation message

securitygate.cpp: In function 'LL check(std::__cxx11::string)':
securitygate.cpp:9:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 0; j < s.size(); j++){
                 ~~^~~~~~~~~~
securitygate.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = laste; j <= psums.size() - 1; j++){
                     ~~^~~~~~~~~~~~~~~~~~~
securitygate.cpp:28:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 0; j <= psums.size() - 1; j++){
                 ~~^~~~~~~~~~~~~~~~~~~
securitygate.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int j = 0; j < psums.size(); j++){
                 ~~^~~~~~~~~~~~~~
securitygate.cpp:38:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(idx < z.size()){
      ~~~~^~~~~~~~~~
securitygate.cpp:43:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(idx2 < w.size() && w[idx2] <= e){
       ~~~~~^~~~~~~~~~
securitygate.cpp: In function 'LL cnt(std::__cxx11::string, int)':
securitygate.cpp:57:9: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(idx == s.size()) return check(s);
     ~~~~^~~~~~~~~~~
securitygate.cpp:65:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int z = idx + 1; z <= s.size(); z++){
                       ~~^~~~~~~~~~~
securitygate.cpp:66:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(z == s.size() || s[z] == 'x'){
      ~~^~~~~~~~~~~
securitygate.cpp:70:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	472 KB	Output is correct
3	Correct	3 ms	524 KB	Output is correct
4	Correct	2 ms	524 KB	Output is correct
5	Correct	2 ms	524 KB	Output is correct
6	Correct	3 ms	524 KB	Output is correct
7	Correct	2 ms	552 KB	Output is correct
8	Correct	2 ms	568 KB	Output is correct
9	Correct	2 ms	612 KB	Output is correct
10	Correct	2 ms	612 KB	Output is correct
11	Correct	2 ms	612 KB	Output is correct
12	Correct	2 ms	612 KB	Output is correct
13	Correct	2 ms	612 KB	Output is correct
14	Correct	3 ms	612 KB	Output is correct
15	Correct	3 ms	612 KB	Output is correct
16	Correct	2 ms	612 KB	Output is correct
17	Correct	2 ms	612 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	472 KB	Output is correct
3	Correct	3 ms	524 KB	Output is correct
4	Correct	2 ms	524 KB	Output is correct
5	Correct	2 ms	524 KB	Output is correct
6	Correct	3 ms	524 KB	Output is correct
7	Correct	2 ms	552 KB	Output is correct
8	Correct	2 ms	568 KB	Output is correct
9	Correct	2 ms	612 KB	Output is correct
10	Correct	2 ms	612 KB	Output is correct
11	Correct	2 ms	612 KB	Output is correct
12	Correct	2 ms	612 KB	Output is correct
13	Correct	2 ms	612 KB	Output is correct
14	Correct	3 ms	612 KB	Output is correct
15	Correct	3 ms	612 KB	Output is correct
16	Correct	2 ms	612 KB	Output is correct
17	Correct	2 ms	612 KB	Output is correct
18	Correct	3 ms	612 KB	Output is correct
19	Correct	5 ms	612 KB	Output is correct
20	Correct	16 ms	612 KB	Output is correct
21	Correct	25 ms	612 KB	Output is correct
22	Correct	26 ms	612 KB	Output is correct
23	Correct	6 ms	612 KB	Output is correct
24	Correct	29 ms	740 KB	Output is correct
25	Correct	5 ms	740 KB	Output is correct
26	Correct	12 ms	740 KB	Output is correct
27	Correct	33 ms	740 KB	Output is correct
28	Correct	17 ms	740 KB	Output is correct
29	Correct	7 ms	740 KB	Output is correct
30	Correct	3 ms	740 KB	Output is correct
31	Correct	27 ms	740 KB	Output is correct

Subtask #3
0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	472 KB	Output is correct
3	Correct	3 ms	524 KB	Output is correct
4	Correct	2 ms	524 KB	Output is correct
5	Correct	2 ms	524 KB	Output is correct
6	Correct	3 ms	524 KB	Output is correct
7	Correct	2 ms	552 KB	Output is correct
8	Correct	2 ms	568 KB	Output is correct
9	Correct	2 ms	612 KB	Output is correct
10	Correct	2 ms	612 KB	Output is correct
11	Correct	2 ms	612 KB	Output is correct
12	Correct	2 ms	612 KB	Output is correct
13	Correct	2 ms	612 KB	Output is correct
14	Correct	3 ms	612 KB	Output is correct
15	Correct	3 ms	612 KB	Output is correct
16	Correct	2 ms	612 KB	Output is correct
17	Correct	2 ms	612 KB	Output is correct
18	Correct	3 ms	612 KB	Output is correct
19	Correct	5 ms	612 KB	Output is correct
20	Correct	16 ms	612 KB	Output is correct
21	Correct	25 ms	612 KB	Output is correct
22	Correct	26 ms	612 KB	Output is correct
23	Correct	6 ms	612 KB	Output is correct
24	Correct	29 ms	740 KB	Output is correct
25	Correct	5 ms	740 KB	Output is correct
26	Correct	12 ms	740 KB	Output is correct
27	Correct	33 ms	740 KB	Output is correct
28	Correct	17 ms	740 KB	Output is correct
29	Correct	7 ms	740 KB	Output is correct
30	Correct	3 ms	740 KB	Output is correct
31	Correct	27 ms	740 KB	Output is correct
32	Correct	236 ms	740 KB	Output is correct
33	Correct	56 ms	740 KB	Output is correct
34	Correct	4527 ms	740 KB	Output is correct
35	Correct	180 ms	740 KB	Output is correct
36	Correct	375 ms	740 KB	Output is correct
37	Correct	1781 ms	740 KB	Output is correct
38	Execution timed out	5090 ms	740 KB	Time limit exceeded
39	Halted	0 ms	0 KB	-

Subtask #4
0 / 43.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	472 KB	Output is correct
3	Correct	3 ms	524 KB	Output is correct
4	Correct	2 ms	524 KB	Output is correct
5	Correct	2 ms	524 KB	Output is correct
6	Correct	3 ms	524 KB	Output is correct
7	Correct	2 ms	552 KB	Output is correct
8	Correct	2 ms	568 KB	Output is correct
9	Correct	2 ms	612 KB	Output is correct
10	Correct	2 ms	612 KB	Output is correct
11	Correct	2 ms	612 KB	Output is correct
12	Correct	2 ms	612 KB	Output is correct
13	Correct	2 ms	612 KB	Output is correct
14	Correct	3 ms	612 KB	Output is correct
15	Correct	3 ms	612 KB	Output is correct
16	Correct	2 ms	612 KB	Output is correct
17	Correct	2 ms	612 KB	Output is correct
18	Correct	3 ms	612 KB	Output is correct
19	Correct	5 ms	612 KB	Output is correct
20	Correct	16 ms	612 KB	Output is correct
21	Correct	25 ms	612 KB	Output is correct
22	Correct	26 ms	612 KB	Output is correct
23	Correct	6 ms	612 KB	Output is correct
24	Correct	29 ms	740 KB	Output is correct
25	Correct	5 ms	740 KB	Output is correct
26	Correct	12 ms	740 KB	Output is correct
27	Correct	33 ms	740 KB	Output is correct
28	Correct	17 ms	740 KB	Output is correct
29	Correct	7 ms	740 KB	Output is correct
30	Correct	3 ms	740 KB	Output is correct
31	Correct	27 ms	740 KB	Output is correct
32	Correct	236 ms	740 KB	Output is correct
33	Correct	56 ms	740 KB	Output is correct
34	Correct	4527 ms	740 KB	Output is correct
35	Correct	180 ms	740 KB	Output is correct
36	Correct	375 ms	740 KB	Output is correct
37	Correct	1781 ms	740 KB	Output is correct
38	Execution timed out	5090 ms	740 KB	Time limit exceeded
39	Halted	0 ms	0 KB	-

Subtask #5
0 / 27.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	472 KB	Output is correct
3	Correct	3 ms	524 KB	Output is correct
4	Correct	2 ms	524 KB	Output is correct
5	Correct	2 ms	524 KB	Output is correct
6	Correct	3 ms	524 KB	Output is correct
7	Correct	2 ms	552 KB	Output is correct
8	Correct	2 ms	568 KB	Output is correct
9	Correct	2 ms	612 KB	Output is correct
10	Correct	2 ms	612 KB	Output is correct
11	Correct	2 ms	612 KB	Output is correct
12	Correct	2 ms	612 KB	Output is correct
13	Correct	2 ms	612 KB	Output is correct
14	Correct	3 ms	612 KB	Output is correct
15	Correct	3 ms	612 KB	Output is correct
16	Correct	2 ms	612 KB	Output is correct
17	Correct	2 ms	612 KB	Output is correct
18	Correct	3 ms	612 KB	Output is correct
19	Correct	5 ms	612 KB	Output is correct
20	Correct	16 ms	612 KB	Output is correct
21	Correct	25 ms	612 KB	Output is correct
22	Correct	26 ms	612 KB	Output is correct
23	Correct	6 ms	612 KB	Output is correct
24	Correct	29 ms	740 KB	Output is correct
25	Correct	5 ms	740 KB	Output is correct
26	Correct	12 ms	740 KB	Output is correct
27	Correct	33 ms	740 KB	Output is correct
28	Correct	17 ms	740 KB	Output is correct
29	Correct	7 ms	740 KB	Output is correct
30	Correct	3 ms	740 KB	Output is correct
31	Correct	27 ms	740 KB	Output is correct
32	Correct	236 ms	740 KB	Output is correct
33	Correct	56 ms	740 KB	Output is correct
34	Correct	4527 ms	740 KB	Output is correct
35	Correct	180 ms	740 KB	Output is correct
36	Correct	375 ms	740 KB	Output is correct
37	Correct	1781 ms	740 KB	Output is correct
38	Execution timed out	5090 ms	740 KB	Time limit exceeded
39	Halted	0 ms	0 KB	-

답안 #57721

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 8.0 / 8.0

Subtask #3 0 / 18.0

Subtask #4 0 / 43.0

Subtask #5 0 / 27.0

Subtask #1
4.0 / 4.0

Subtask #2
8.0 / 8.0

Subtask #3
0 / 18.0

Subtask #4
0 / 43.0

Subtask #5
0 / 27.0