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Submission #1019671

# Submission time Handle Problem Language Result Execution time Memory
1019671 2024-07-11T07:14:27 Z thangdz2k7 Mađioničar (COI22_madionicar) C++17
0 / 100
 0 ms 344 KB 
#include <bits/stdc++.h>

using namespace std;

bool ask(int l, int r){
    cout << "? " << l << ' ' << r;
    cout << flush;
    int t; cin >> t;
    return t;
}

void answer(int L){
    cout << "! " << L;
    cout << flush;
}

void solve(){
    int n; cin >> n;
    int ans = 1;
    for (int i = 1; i <= n; ++ i){
        while (i - ans >= 1 && i + ans <= n && ask(i - ans, i + ans)) ++ ans;
    }
    int res = 2 * ans - 1;
    for (int i = 1; i <= n; ++ i){
        while (i - ans >= 1 && i + ans + 1 <= n && ask(i - ans, i + ans + 1)) ++ ans, res = max(res, 2 * ans - 2);
    }
    answer(res);
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    solve();

    return 0;
}

Subtask #1
0 / 13.0

# Verdict Execution time Memory Grader output
1 Execution timed out 0 ms 344 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Execution timed out 0 ms 344 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Execution timed out 0 ms 344 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 37.0

# Verdict Execution time Memory Grader output
1 Execution timed out 0 ms 344 KB Time limit exceeded (wall clock)
2 Halted 0 ms 0 KB -