oj.uz

Submission #511451

# Submission time Handle Problem Language Result Execution time Memory
511451 2022-01-15T20:26:14 Z CodeTiger927 Match (CEOI16_match) C++17
100 / 100
 75 ms 38588 KB 
using namespace std;

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <stack>

#define MAXN 100005
#define MOD 998244353

int N,pre0[MAXN],pre1[MAXN],mask[MAXN];
string s;
char ans[MAXN];
map<long long,vector<int>> pos[26];

bool solve(int l,int r) {
	if(l > r) return true;
	auto uwu = pos[s[l] - 'a'][mask[l]];
	auto it = upper_bound(uwu.begin(),uwu.end(),r);
	if(it == uwu.begin() || *prev(it) <= l) return false;
	int owo = *prev(it);
	// cout << l << " " << owo << endl;
	ans[l] = '(';
	ans[owo] = ')';
	if(l == r - 1) return true;
	return solve(l + 1,owo - 1) & solve(owo + 1,r);
}

int main() {
	cin >> s;
	N = s.length();
	long long uwu = 0;
	mask[0] = 0;
	stack<int> st;
	for(int i = 0;i < N;++i) {
		if(st.size() && s[i] == s[st.top()]) {
			mask[i + 1] = (mask[i] + MOD - (st.size() * (1 << (s[st.top()] - 'a')) % MOD)) % MOD;
			st.pop();
		}else{
			st.push(i);
			mask[i + 1] = (mask[i] + st.size() * (1 << (s[i] - 'a'))) % MOD;
		}
		pos[s[i] - 'a'][mask[i + 1]].push_back(i);
	}
	if(solve(0,N - 1)) {
		for(int i = 0;i < N;++i) {
			cout << ans[i];
		}
		cout << endl;
	}else{
		cout << -1 << endl;
	}
	return 0;
}

Compilation message

match.cpp: In function 'int main()':
match.cpp:33:12: warning: unused variable 'uwu' [-Wunused-variable]
   33 |  long long uwu = 0;
      |            ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct

Subtask #2
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 432 KB Output is correct

Subtask #3
63.0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 460 KB Output is correct
7 Correct 1 ms 432 KB Output is correct
8 Correct 2 ms 716 KB Output is correct
9 Correct 3 ms 1100 KB Output is correct
10 Correct 3 ms 1208 KB Output is correct
11 Correct 3 ms 1464 KB Output is correct
12 Correct 35 ms 9272 KB Output is correct
13 Correct 44 ms 10092 KB Output is correct
14 Correct 47 ms 11616 KB Output is correct
15 Correct 29 ms 38576 KB Output is correct
16 Correct 29 ms 38588 KB Output is correct
17 Correct 29 ms 10092 KB Output is correct
18 Correct 19 ms 9500 KB Output is correct
19 Correct 68 ms 13296 KB Output is correct
20 Correct 34 ms 10056 KB Output is correct
21 Correct 75 ms 14344 KB Output is correct