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QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#217073 | #5534. Match | Camillus# | 10 | 0ms | 3816kb | C++20 | 1.5kb | 2023-10-16 14:19:49 | 2024-07-04 02:20:13 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
signed main() {
#ifndef LOCAL
ios::sync_with_stdio(false);
cin.tie(nullptr);
#else
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
string s;
cin >> s;
int n = (int)s.size();
string t = s;
vector<int> q;
vector<int> V = { 0 };
vector<int> before(n);
vector<int> after(n);
map<int, set<int>> Q[26];
int v = 0;
for (int i = 0; i < n; i++) {
before[i] = q.size();
if (!q.empty() && s[q.back()] == s[i]) {
t[i] = ')';
q.pop_back();
V.pop_back();
} else {
t[i] = '(';
q.push_back(i);
V.push_back(++v);
}
after[i] = q.size();
Q[s[i] - 'a'][after[i]].insert(i);
}
if (!q.empty()) {
cout << -1 << '\n';
} else {
auto rec = [&](auto &&rec, int l, int r) -> void {
if (l > r) {
return;
}
if (s[l] == s[r]) {
t[l] = '(';
t[r] = ')';
rec(rec, l + 1, r - 1);
} else {
const auto &B = Q[s[l] - 'a'][before[l]];
auto it = B.upper_bound(r);
int best = *prev(it);
rec(rec, l, best);
rec(rec, best + 1, r);
}
};
rec(rec, 0, n - 1);
cout << t << '\n';
}
return 0;
}
詳細信息
Subtask #1:
score: 10
Accepted
Test #1:
score: 10
Accepted
time: 0ms
memory: 3816kb
input:
abbaaa
output:
(()())
result:
ok single line: '(()())'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3812kb
input:
cbbbbccbbccbbbbbbc
output:
(((((((()))())))))
result:
ok single line: '(((((((()))())))))'
Test #3:
score: 0
Accepted
time: 0ms
memory: 3620kb
input:
ddbcbdacccbddaba
output:
-1
result:
ok single line: '-1'
Subtask #2:
score: 0
Time Limit Exceeded
Dependency #1:
100%
Accepted
Test #4:
score: 0
Time Limit Exceeded
input:
fsooskkkksokkkkossskkiffoofooikkiiiiiooikkkksookkiissiooookskffsskiiksskiikfiifkifofssooffffkfiiiifkfsiisfsofossiffissikskiikkkiikokikkffkiiksffkkiossifkiookioffoikkkoiiiooioiffkkkssfoooiiiioioskksisikkkoifiooikkkkfiffississkskiofffiffiiiosksskfffofisksksskiisikkskkkksoosiffoofoiooioooifiifssfffffoi...
output:
result:
Subtask #3:
score: 0
Skipped
Dependency #1:
100%
Accepted
Dependency #2:
0%