Submission details
Task:Bracket sequence
Sender:aalto25j_001
Submission time:2025-11-05 16:42:44 +0200
Language:C++ (C++17)
Status:READY
Result:
Test results
testverdicttime
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Code

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

typedef long long ll;
typedef vector<ll> vl;
typedef pair<ll,ll> pl;

#define F first
#define S second
#define PB push_back
#define MP make_pair

#define REP(i,a,b) for (ll i = a; i < b; i++)

int main() {
    string s;
    cin >> s;

    ll open = 0;
    stack<ll> start;
    ll best_s = 0;
    ll best_e = -1;
    REP(i,0,(ll)s.size()) {
        char c = s[i];
        if(c == '(') {
            //cout << "At step i = " << i << endl;
            start.push(i);
            open += 1;
        }
        if(c == ')') {
            if(open > 0) {
                open -= 1;
                ll s = start.top();
                start.pop();
                // register indices
                if(i-s > best_e-best_s) {
                    best_s = s;
                    best_e = i;
                }
            }
            else {
                continue;
            }
        }
    }

    if(best_e == -1) {
        cout << -1 << endl;
        return 0;
    }
    REP(i, best_s, best_e+1) {
        cout << s[i];
    }
}

Test details

Test 1

Verdict: ACCEPTED

input
(

correct output
-1

user output
-1

Test 2

Verdict: ACCEPTED

input
))

correct output
-1

user output
-1

Test 3

Verdict: ACCEPTED

input
((

correct output
-1

user output
-1

Test 4

Verdict: ACCEPTED

input
()

correct output
()

user output
()

Test 5

Verdict: ACCEPTED

input
(()

correct output
()

user output
()

Test 6

Verdict:

input
()()

correct output
()()

user output
()

Test 7

Verdict: ACCEPTED

input
))))

correct output
-1

user output
-1

Test 8

Verdict: ACCEPTED

input
())(

correct output
()

user output
()

Test 9

Verdict: ACCEPTED

input
(()(

correct output
()

user output
()

Test 10

Verdict: ACCEPTED

input
)))))

correct output
-1

user output
-1

Test 11

Verdict: ACCEPTED

input
())(()

correct output
()

user output
()

Test 12

Verdict: ACCEPTED

input
))(()(

correct output
()

user output
()

Test 13

Verdict:

input
()(())

correct output
()(())

user output
(())

Test 14

Verdict:

input
()(())

correct output
()(())

user output
(())

Test 15

Verdict: ACCEPTED

input
()((((

correct output
()

user output
()

Test 16

Verdict:

input
(())(())((

correct output
(())(())

user output
(())

Test 17

Verdict: ACCEPTED

input
)))((()(((

correct output
()

user output
()

Test 18

Verdict: ACCEPTED

input
(()))(((((

correct output
(())

user output
(())

Test 19

Verdict: ACCEPTED

input
())(()())(

correct output
(()())

user output
(()())

Test 20

Verdict: ACCEPTED

input
))))))))))

correct output
-1

user output
-1

Test 21

Verdict: ACCEPTED

input
())(())(()

correct output
(())

user output
(())

Test 22

Verdict: ACCEPTED

input
)((())(()(

correct output
(())

user output
(())

Test 23

Verdict:

input
()(())()()

correct output
()(())()()

user output
(())

Test 24

Verdict:

input
()(())((()

correct output
()(())

user output
(())

Test 25

Verdict: ACCEPTED

input
()((((((((

correct output
()

user output
()

Test 26

Verdict:

input
((((((())))))))(((((((((()))))...

correct output
(((((())))))(((((((((()))))(((...

user output
(((((((((()))))((((((())))))))...

Test 27

Verdict:

input
)))((()((((((()()))(())(()(())...

correct output
((()((((((()()))(())(()(()))((...

user output
((()((((((()()))(())(()(()))((...

Test 28

Verdict: ACCEPTED

input
(()))((((((())(((()))))(())())...

correct output
(((())((()()(((((())()))())))(...

user output
(((())((()()(((((())()))())))(...

Test 29

Verdict: ACCEPTED

input
())))))))(((((((((())))(()))))...

correct output
(((((((((())))(())))))((((((()...

user output
(((((((((())))(())))))((((((()...

Test 30

Verdict: ACCEPTED

input
))))))))))))))))))))))))))))))...

correct output
-1

user output
-1

Test 31

Verdict:

input
())(())(()()()(()()()))((())((...

correct output
(())(()()()(()()()))((())(((((...

user output
((())(((((())))())((((()()()()...

Test 32

Verdict: ACCEPTED

input
(((((((((()))))))))((((((((())...

correct output
((((((((()))))))))

user output
((((((((()))))))))

Test 33

Verdict: ACCEPTED

input
()(())()()()(((((())))(((()())...

correct output
((((())))(((()()))((())(())())...

user output
((((())))(((()()))((())(())())...

Test 34

Verdict:

input
()(())((()))(((())))((((()))))...

correct output
()(())((()))(((())))((((()))))...

user output
((((((((()))))))))

Test 35

Verdict:

input
()(((((((()(((((((((()())())))...

correct output
()(((((((()(((((((((()())())))...

user output
(((((((()(((((((((()())())))()...

Test 36

Verdict: ACCEPTED

input
((((((((((((())))))))))))))))(...

correct output
((((((((((((((()))))))))))))((...

user output
((((((((((((((()))))))))))))((...
Truncated

Test 37

Verdict: ACCEPTED

input
)))((()((((((()()))(())(()(())...

correct output
((()((((()(()((()(())()((()())...

user output
((()((((()(()((()(())()((()())...

Test 38

Verdict:

input
(()))((((((())(((()))))(())())...

correct output
((((((())(((()))))(())())())((...

user output
((((((())(((()))))(())())())((...
Truncated

Test 39

Verdict: ACCEPTED

input
(()))))))))))))))(((((((((((((...

correct output
(((((((((((((((((()))))))((())...

user output
(((((((((((((((((()))))))((())...

Test 40

Verdict: ACCEPTED

input
))))))))))))))))))))))))))))))...

correct output
-1

user output
-1

Test 41

Verdict:

input
())(())(()()()(()()()))((())((...

correct output
(())(()()()(()()()))((())(((((...

user output
((())(((((())))())((((()()()()...

Test 42

Verdict: ACCEPTED

input
))))(((((((((((((())))))))))))...

correct output
((((((((((((()))))))))))))

user output
((((((((((((()))))))))))))

Test 43

Verdict:

input
()(())()()()(((((())))(((()())...

correct output
()()(((()())(()(((()(()(()(()(...

user output
(((()())(()(((()(()(()(()(()))...

Test 44

Verdict:

input
()(())((()))(((())))((((()))))...

correct output
()(())((()))(((())))((((()))))...

user output
((((((((((((()))))))))))))

Test 45

Verdict:

input
()(((((((()(((((((((()())())))...

correct output
()(((((((()(((((((((()())())))...

user output
(((((((()(((((((((()())())))()...

Test 46

Verdict: ACCEPTED

input
((((((((((((((((((((((((((((((...

correct output
((((((((((((((((((((((((((((((...

user output
((((((((((((((((((((((((((((((...
Truncated

Test 47

Verdict: ACCEPTED

input
)))((()((((((()()))(())(()(())...

correct output
(((())()((()))()())((((((()(()...

user output
(((())()((()))()())((((((()(()...
Truncated

Test 48

Verdict:

input
(()))((((((())(((()))))(())())...

correct output
((()))(()()((()()((((()()()(()...

user output
(()()((()()((((()()()(())((()(...
Truncated

Test 49

Verdict: ACCEPTED

input
(((((((())))))))))))))))))))))...

correct output
((((((((((((((((((((((((((((((...

user output
((((((((((((((((((((((((((((((...
Truncated

Test 50

Verdict: ACCEPTED

input
))))))))))))))))))))))))))))))...

correct output
-1

user output
-1

Test 51

Verdict: ACCEPTED

input
())(())(()()()(()()()))((())((...

correct output
(((()((((((()(((((()(((()(((()...

user output
(((()((((((()(((((()(((()(((()...
Truncated

Test 52

Verdict: ACCEPTED

input
(((((((())))))))))))))))))))))...

correct output
((((((((((((((((((((((((((((((...

user output
((((((((((((((((((((((((((((((...

Test 53

Verdict:

input
()(())()()()(((((())))(((()())...

correct output
()(())()()()(((((())))(((()())...

user output
(((((())))(((()()))((())(())()...
Truncated

Test 54

Verdict:

input
()(())((()))(((())))((((()))))...

correct output
()(())((()))(((())))((((()))))...

user output
((((((((((((((((((((((((((((((...

Test 55

Verdict:

input
()(((((((()(((((((((()())())))...

correct output
(((())((())(())(((()(()()(()()...

user output
(((())((())(())(((()(()()(()()...
Truncated

Test 56

Verdict: ACCEPTED

input
((((((((((((((((((((((((((((((...

correct output
((((((((((((((((((((((((((((((...

user output
((((((((((((((((((((((((((((((...
Truncated

Test 57

Verdict:

input
)))((()((((((()()))(())(()(())...

correct output
(((()))(())(())(((((()())()(()...

user output
(((()))(())(())(((((()())()(()...
Truncated

Test 58

Verdict: ACCEPTED

input
(()))((((((())(((()))))(())())...

correct output
(()()(()((()(((()(((()()()()((...

user output
(()()(()((()(((()(((()()()()((...
Truncated

Test 59

Verdict: ACCEPTED

input
((((((((((((((((((((((((((((((...

correct output
((((((((((((((((((((((((((((((...

user output
((((((((((((((((((((((((((((((...
Truncated

Test 60

Verdict: ACCEPTED

input
))))))))))))))))))))))))))))))...

correct output
-1

user output
-1

Test 61

Verdict:

input
())(())(()()()(()()()))((())((...

correct output
(()(()()()(()())(())((((((()((...

user output
(()(()()()(()())(())((((((()((...
Truncated

Test 62

Verdict: ACCEPTED

input
))))))))))))))))))))))))))))))...

correct output
((((((((((((((((((((((((((((((...

user output
((((((((((((((((((((((((((((((...
Truncated

Test 63

Verdict:

input
()(())()()()(((((())))(((()())...

correct output
(()()((((())()()())())))((())(...

user output
((())(()())(()(()(()((()(((())...
Truncated

Test 64

Verdict:

input
()(())((()))(((())))((((()))))...

correct output
()(())((()))(((())))((((()))))...

user output
((((((((((((((((((((((((((((((...
Truncated

Test 65

Verdict:

input
()(((((((()(((((((((()())())))...

correct output
()(((((()()))()))()(())(((()((...

user output
(((((()()))()))()(())(((()(()(...
Truncated