Submission #382555

#	Time	Username	Problem	Language	Result	Execution time	Memory
382555		mewnian	Zagrade (COI20_zagrade)	C++14	0 / 100	1 ms	364 KiB

zagrade

#include <bits/stdc++.h>
#define fi first
#define se second

using namespace std;
typedef long long ll;

const ll MAXN = 2e5 + 7;
const ll INV = 202;
const ll MOD = 2019;

int n, q;

void solvebrute()
{

}

void solveac()
{
    cout << "? " << 1 << ' ' << n << endl;
    string ans = "(";
    int rs; cin >> rs;
    if (!rs)
    {
        for (int i = 0; i < n; ++i) ans += '(';
        cout << ans << endl;
        return;
    }
    int l = 2, r = 3;
    while (r < n)
    {
        cout << "? " << l << ' ' << r << endl;
        cin >> rs;
        if (rs)
        {
            int sz = (r - l + 1) / 2;
            for (int i = 0; i < sz; ++i) ans += '(';
            for (int i = 0; i < sz; ++i) ans += ')';
            l = r + 1, r = l + 1;
            continue;
        }
        r += 2;
    }
    ans += ')';
    cout << ans << endl;
}

int main()
{
    ios_base::sync_with_stdio(0); cout.tie(0);
//    #ifdef OFFLINE
//    freopen("input.inp", "r", stdin);
//    #endif
    cin >> n >> q;
    solveac();
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 7
• Subtask 3: 0 / 57
• Subtask 4: 0 / 22