Submission #1360223

#	Time	Username	Problem	Language	Result	Execution time	Memory
1360223		kawhiet	Dark Ride (EGOI25_darkride)	C++20	24 / 100	1 ms	468 KiB

Main

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

#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 47
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    auto ask = [&](int l, int r) {
        string s(n, '0');
        for (int i = l; i <= r; i++) {
            s[i] = '1';
        }
        cout << "? " << s << endl;
        int ret;
        cin >> ret;
        return ret;
    };
    vector<int> ans;
    for (int i = 0; i < n; i++) {
        if (ask(i, i) == 1) {
            ans.push_back(i);
        }
    }
    assert(ans.size() == 2);
    cout << "! " << ans[0] << ' ' << ans[1] << '\n';
    return 0;
}

• Subtask 1: 0 / 0
• Subtask 2: 9 / 9
• Subtask 3: 15 / 15
• Subtask 4: 0 / 17
• Subtask 5: 0 / 16
• Subtask 6: 0 / 14
• Subtask 7: 0 / 29