oj.uz

Submission #417029

# Submission time Handle Problem Language Result Execution time Memory
417029 2021-06-03T10:45:29 Z aryan12 Colors (BOI20_colors) C++17
0 / 100
 1 ms 256 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long

void Solve() {
    int n;
    cin >> n;
    int l = 1, r = n, cnt = 0, ans = n;
    while(l <= r) {
        int response;
        if(cnt % 2 == 0) {
            cout << "? " << l++ << endl;
        }
        else {
            cout << "? " << r-- << endl;
        }
        cnt++;
        cin >> response;
        if(cnt == 1)
            continue;
        if(response == 1) {
            ans = min(ans, r - l + 2);
        }
        else {
            cout << "= " << ans << endl;
            break;
        }
    }
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    Solve();
    return 0;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB OK (5 queries)
2 Correct 1 ms 200 KB OK (6 queries)
3 Correct 0 ms 200 KB OK (10 queries)
4 Incorrect 1 ms 200 KB Unexpected end of file - token expected
5 Halted 0 ms 0 KB -

Subtask #2
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB OK (5 queries)
2 Correct 1 ms 200 KB OK (6 queries)
3 Correct 0 ms 200 KB OK (10 queries)
4 Incorrect 1 ms 200 KB Unexpected end of file - token expected
5 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB OK (5 queries)
2 Correct 1 ms 200 KB OK (6 queries)
3 Correct 0 ms 200 KB OK (10 queries)
4 Incorrect 1 ms 200 KB Unexpected end of file - token expected
5 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB OK (5 queries)
2 Correct 1 ms 200 KB OK (6 queries)
3 Correct 0 ms 200 KB OK (10 queries)
4 Incorrect 1 ms 200 KB Unexpected end of file - token expected
5 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB OK (5 queries)
2 Correct 1 ms 200 KB OK (6 queries)
3 Correct 0 ms 200 KB OK (10 queries)
4 Incorrect 1 ms 200 KB Unexpected end of file - token expected
5 Halted 0 ms 0 KB -