QOJ.ac

QOJ

ID	题目	提交者	结果	用时	内存	语言	文件大小	提交时间	测评时间
#99802	#6345. Random Interactive Convex Hull Bot	whatever	AC ✓	142ms	3480kb	C++17	1.4kb	2023-04-23 19:19:54	2023-04-23 19:21:34

Judging History

你现在查看的是最新测评结果

[2023-08-10 23:21:45]
System Update: QOJ starts to keep a history of the judgings of all the submissions.

[2023-04-23 19:21:34]
评测

测评结果：AC
用时：142ms
内存：3480kb

查看

[2023-04-23 19:19:54]
提交

answer

#include <bits/stdc++.h>
using namespace std;
#define rep(i, a, b) for (int i = a, I = b; i <= I; ++i)
#define per(i, a, b) for (int i = a, I = b; i >= I; --i)
using i64 = long long;
using i128 = __int128_t;
using pii = pair<i64, i64>;
template<typename T> void up(T &x, T y) { if (x < y) x = y; }
template<typename T> void down(T &x, T y) { if (x > y) x = y; }

int query(int i, int j, int k) {
    cout << "? " << i << " " << j << " " << k << endl;
    int res; cin >> res; return res == 1;
}

int main() {
    ios::sync_with_stdio(0), cin.tie(0);

    int n; cin >> n;
    vector<int> nodes{1, 2, 3};
    if (!query(1, 2, 3)) swap(nodes[1], nodes[2]);

    rep(i, 4, n) {
        int m = nodes.size();
        int l = 0, r = m - 1;
        while (l < r) {
            int mid = (l + r + 1) >> 1;
            if (query(nodes[0], nodes[mid], i)) l = mid;
            else r = mid - 1;
        }
        if (l > 0 && l < m - 1 && query(nodes[l], nodes[l + 1], i)) continue;
        rotate(nodes.begin(), nodes.begin() + l + 1, nodes.end());       
        while (query(i, nodes[1], nodes[0])) nodes.erase(nodes.begin());
        while (query(i, nodes.back(), nodes[(int) nodes.size() - 2])) nodes.erase(--nodes.end());
        nodes.insert(nodes.begin(), i);
    }

    cout << "! " << nodes.size();
    for (auto x : nodes) cout << " " << x;
    cout << endl;
    
    return 0;
}

源文件, 语言: C++17

详细

Test #1:

score: 100

Accepted

time: 1ms

memory: 3424kb

input:

5
-1
-1
1
-1
-1
-1
-1
-1

output:

? 1 2 3
? 1 3 4
? 4 2 3
? 4 1 2
? 4 1 2
? 4 2 5
? 5 1 2
? 5 4 1
! 4 5 2 1 4

result:

ok OK, 8 queries, 4 point in hull

Test #2:

score: 0

Accepted

time: 9ms

memory: 3352kb

input:

50
-1
1
1
-1
-1
1
-1
-1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
-1
-1
1
1
-1
-1
-1
1
-1
-1
1
1
-1
-1
1
1
-1
-1
-1
-1
-1
-1
1
1
-1
1
1
-1
1
-1
1
-1
1
1
1
-1
-1
1
-1
1
-1
-1
-1
-1
1
-1
1
1
1
1
-1
1
1
-1
1
1
1
-1
1
-1
-1
-1
-1
-1
1
1
-1
1
1
1
1
1
1
1
-1
1
1
-1
1
1
-1
-1
-1
1
-1
1
-1
-1
1
1
-1
-...

output:

? 1 2 3
? 1 3 4
? 1 2 4
? 4 3 1
? 4 2 3
? 4 3 5
? 4 2 5
? 3 2 5
? 5 4 2
? 5 3 1
? 5 4 6
? 5 2 6
? 6 4 2
? 6 5 3
? 6 1 7
? 6 3 7
? 1 3 7
? 7 5 3
? 7 1 4
? 7 6 8
? 7 3 8
? 7 5 8
? 3 5 8
? 8 6 5
? 8 2 6
? 8 3 7
? 8 4 9
? 8 6 9
? 8 2 9
? 2 4 9
? 9 1 4
? 9 2 6
? 9 3 10
? 9 6 10
? 9 8 10
? 3 8 10
? 9 3 11...

result:

ok OK, 234 queries, 10 point in hull

Test #3:

score: 0

Accepted

time: 15ms

memory: 3480kb

input:

1000
-1
1
1
-1
-1
-1
-1
-1
1
-1
1
1
1
-1
-1
1
1
-1
-1
1
1
-1
1
-1
-1
-1
1
-1
1
1
1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
1
1
-1
-1
1
-1
1
1
1
-1
-1
1
-1
1
-1
-1
1
-1
1
-1
-1
-1
-1
1
1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
1
-1
1
-1
1
1
1
-1
-1
1
1
-1
-1
-1
-1
1
-1
-1
1
1
1
1
-1
-1
1
-1
1
1
1
1
-1
-1
-1
-1
-1
1...

output:

result:

ok OK, 5144 queries, 21 point in hull

Test #4:

score: 0

Accepted

time: 72ms

memory: 3384kb

input:

output:

result:

ok OK, 10872 queries, 23 point in hull

Test #5:

score: 0

Accepted

time: 83ms

memory: 3428kb

input:

3000
1
-1
-1
-1
-1
-1
1
-1
-1
-1
1
-1
1
-1
-1
1
1
1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1
1
1
1
-1
-1
-1
1
1
-1
1
-1
-1
1
-1
1
-1
-1
-1
-1
1
1
1
1
-1
-1
1
1
-1
-1
-1
-1
-1
-1
1
1
1
-1
-1
-1
1
-1
-1
-1
1
-1
-1
-1
-1
-1
1
-1
1
-1
-1
1
-1
1
-1
-1
-1
-1
1
-1
-1
-1
1
1
-1
1
-1
-1
1
-1
1
-1
-1
-1
-1...

output:

result:

ok OK, 15868 queries, 25 point in hull

Test #6:

score: 0

Accepted

time: 62ms

memory: 3472kb

input:

output:

result:

ok OK, 21307 queries, 22 point in hull

Test #7:

score: 0

Accepted

time: 120ms

memory: 3460kb

input:

4999
-1
-1
-1
-1
1
1
1
-1
-1
1
1
-1
-1
-1
1
1
1
-1
1
1
1
1
-1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1
1
1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
1
1
-1
1
-1
1
1
-1
1
1
1
1
-1
-1
-1
-1
-1
1
-1
-1
-1
1
1
1
-1
1
1
-1
1
-1
-1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
1
-1
-1
-1
-1
-1
1
-1
1
1
-1
1
1
-1
-1
-1
-1
1
-...

output:

result:

ok OK, 27477 queries, 24 point in hull

Test #8:

score: 0

Accepted

time: 110ms

memory: 3392kb

input:

5000
-1
1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
1
1
-1
1
-1
-1
1
-1
-1
1
-1
1
1
-1
1
1
1
-1
1
1
-1
1
1
1
-1
1
1
1
-1
1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
1
-1
-1
-1
1
-1
-1
1
1
1
1
-1
1
1
-1
1
-1
-1
-1
-1
-1
1
1
1
-1
1
1
1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
1
1
1
1
1
-1
1
-1
1
1
1
-1
-1
-1
1
-1
1
-1
1...

output:

result:

ok OK, 27049 queries, 21 point in hull

Test #9:

score: 0

Accepted

time: 142ms

memory: 3464kb

input:

5000
1
-1
-1
-1
1
1
-1
1
1
-1
1
-1
1
-1
-1
-1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
-1
-1
-1
1
1
1
1
-1
1
-1
1
-1
1
1
1
1
-1
-1
1
1
1
-1
-1
-1
1
-1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
1
-1
-1
-1
1
-1
-1
1
-1
1
-1
1
-1
-1
1
1
1
-1
-1
-1
-1
-1
1
-1
1
-1
1
-1
1
1
-1
1
1
1
1
1
-1
-1
-1
1
-1
1
-1
1
-1
1
1
1
...

output:

result:

ok OK, 27447 queries, 27 point in hull

Test #10:

score: 0

Accepted

time: 119ms

memory: 3424kb

input:

output:

? 1 2 3
? 1 2 4
? 4 3 2
? 4 1 3
? 4 3 2
? 4 2 5
? 4 3 5
? 5 2 4
? 5 3 2
? 5 2 6
? 5 3 6
? 2 3 6
? 6 5 3
? 6 2 4
? 6 5 7
? 6 3 7
? 7 5 3
? 7 4 5
? 7 6 2
? 7 2 4
? 7 4 8
? 7 2 8
? 4 2 8
? 7 4 9
? 7 2 9
? 4 2 9
? 7 4 10
? 7 5 10
? 10 4 5
? 10 2 4
? 10 7 2
? 10 2 11
? 10 4 11
? 4 2 11
? 10 2 12
? 10 4 1...

result:

ok OK, 28061 queries, 25 point in hull

Test #11:

score: 0

Accepted

time: 116ms

memory: 3392kb

input:

5000
1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
1
-1
-1
1
-1
1
1
1
-1
-1
1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
1
1
1
-1
1
-1
-1
-1
-1
1
-1
1
1
1
-1
-1
1
1
-1
1
1
1
-1
1
1
1
-1
1
1
1
-1
1
1
1
-1
1
1
-1
-1
1
-1
-1
-1
1
1
1
1
-1
-1
1
1
1
1
-1
-1
1
-1
-1
1
1
1
1
1
-1
1
-1
1
-1
-1
-1
-1
1
-1
1
-1
-1
1
1
1
-1
1
-1
1
1
1
1...

output:

result:

ok OK, 27057 queries, 25 point in hull

Test #12:

score: 0

Accepted

time: 142ms

memory: 3396kb

input:

output:

result:

ok OK, 27233 queries, 27 point in hull

Test #13:

score: 0

Accepted

time: 102ms

memory: 3480kb

input:

5000
1
-1
-1
-1
1
-1
1
-1
1
-1
-1
-1
1
-1
-1
-1
-1
1
1
1
-1
1
-1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
1
-1
1
1
-1
-1
-1
1
-1
1
1
-1
1
1
-1
1
1
1
1
-1
1
-1
1
1
1
1
1
-1
1
1
-1
1
-1
1
-1
-1
1
-1
1
-1
-1
1
-1
1
-1
-1
1
1
-1
-1
1
1
-1
-1
1
1
-1
-1
1
1
-1
1
-1
-1
-1
1
-1
-1
1
1
-1
1
1
-1
1
-1
1
-1
1...

output:

result:

ok OK, 28306 queries, 25 point in hull

Test #14:

score: 0

Accepted

time: 105ms

memory: 3356kb

input:

5000
-1
-1
-1
-1
-1
1
1
1
-1
-1
-1
-1
-1
-1
1
-1
1
-1
-1
-1
-1
-1
-1
-1
-1
1
-1
1
-1
1
-1
1
-1
-1
-1
-1
1
1
1
-1
-1
-1
-1
1
1
1
-1
-1
-1
1
1
1
-1
1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
1
1
1
1
1
1
-1
1
1
-1
1
1
1
-1
1
-1
-1
-1
-1
1
1
-1
1
-1
1
1
-1
1
1
1
-1
-1
-1
1
-1
1
1
1
1
-1
1
1
-1
-1
1
-1
-1
1
1
1
-1...

output:

result:

ok OK, 27699 queries, 28 point in hull

Test #15:

score: 0

Accepted

time: 103ms

memory: 3344kb

input:

output:

result:

ok OK, 26567 queries, 23 point in hull

Test #16:

score: 0

Accepted

time: 91ms

memory: 3416kb

input:

5000
-1
1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
1
1
1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
1
1
-1
1
1
-1
-1
1
-1
-1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
-1
1
1
1
1
-1
1
-1
-1
1
1
1
-1
1
1
-1
-1
-1
-1
-1
-1
-1
1
-1
1
1
-1
-1
1
-1
1
1
-1
-1
-1
1
1
-1
1
-1
-1
1
-1
-1
1
1
-1
-1
-1
-1
...

output:

? 1 2 3
? 1 3 4
? 1 2 4
? 3 2 4
? 4 1 2
? 4 3 1
? 4 1 5
? 4 3 5
? 1 3 5
? 5 4 3
? 5 1 2
? 5 4 6
? 5 2 6
? 4 2 6
? 6 1 2
? 6 4 3
? 6 5 7
? 6 3 7
? 6 4 7
? 7 2 6
? 7 1 2
? 7 4 3
? 7 5 8
? 7 2 8
? 8 1 2
? 8 5 1
? 8 7 4
? 8 3 9
? 8 1 9
? 9 5 1
? 9 3 5
? 9 8 7
? 9 4 10
? 9 7 10
? 9 8 10
? 7 8 10
? 9 4 11...

result:

ok OK, 27290 queries, 19 point in hull

Test #17:

score: 0

Accepted

time: 142ms

memory: 3424kb

input:

5000
1
1
1
-1
-1
1
1
-1
-1
-1
-1
-1
1
-1
1
-1
-1
1
-1
-1
-1
-1
-1
-1
1
1
1
-1
-1
-1
1
1
1
1
-1
1
1
-1
1
-1
-1
-1
-1
-1
1
1
1
1
1
1
1
-1
1
-1
-1
1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
1
-1
1
-1
-1
-1
1
1
1
-1
1
-1
-1
1
-1
-1
1
1
1
1
-1
1
-1
1
-1
-1
-1
-1
-1
-1
1
1
1
-1
1
1
1
-1
1
1
1
1
-1
-1
1
1
-1
-1
1
...

output:

result:

ok OK, 27252 queries, 25 point in hull

Test #18:

score: 0

Accepted

time: 132ms

memory: 3396kb

input:

5000
-1
1
-1
-1
-1
-1
1
1
1
-1
-1
1
1
-1
1
-1
-1
1
1
-1
1
-1
-1
-1
1
1
-1
-1
-1
-1
1
1
-1
-1
-1
1
-1
-1
-1
1
-1
-1
1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
-1
1
-1
1
-1
-1
1
-1
-1
1
1
-1
-1
-1
-1
-1
-1
-1
-1
1
-1
1
-1
-1
1
-1
1
1
1
-1
-1
-1
-1
1
-1
1
1
1
-1
-1
-1
1
-1
-1
-1
1
1
1
1
-1
1
1
-1
-1
-1
-1
1
1
-1
-1...

output:

result:

ok OK, 27362 queries, 24 point in hull

Test #19:

score: 0

Accepted

time: 99ms

memory: 3392kb

input:

5000
-1
1
1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
-1
-1
-1
-1
1
-1
1
-1
-1
-1
-1
-1
1
1
1
-1
-1
1
1
-1
-1
-1
-1
1
-1
1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
-1
1
-1
-1
-1
1
-1
-1
-1
1
-1
-1
1
-1
-1
-1
1
-1
1
-1
-1
-1
1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1
1
-1
1
-1
1
1
1
1
-1
1
1
1
-1
1
-1
-1
1
-1
1
1
1
1
-1
1
1
1
...

output:

result:

ok OK, 26960 queries, 23 point in hull

Test #20:

score: 0

Accepted

time: 98ms

memory: 3480kb

input:

5000
-1
-1
1
-1
-1
1
1
-1
-1
1
1
-1
-1
1
-1
-1
-1
1
-1
-1
-1
1
-1
-1
1
1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
1
1
1
1
-1
1
-1
-1
-1
1
-1
1
1
1
-1
-1
1
-1
1
-1
1
-1
-1
-1
1
1
1
1
-1
-1
1
1
1
1
-1
-1
1
-1
-1
1
-1
1
1
1
-1
1
1
1
-1
1
1
1
-1
1
-1
1
-1
-1
-1
-1
-1
1
-1
1
1
-1
-1
1
1
1
-1
-1
-1
-1
-1
1
1
-1
1
1
1...

output:

result:

ok OK, 25162 queries, 19 point in hull

Test #21:

score: 0

Accepted

time: 132ms

memory: 3352kb

input:

5000
1
1
-1
-1
-1
-1
1
1
-1
-1
-1
1
-1
-1
-1
-1
-1
1
-1
-1
-1
-1
1
-1
1
-1
1
1
-1
-1
-1
-1
-1
1
-1
-1
1
-1
-1
1
1
1
-1
1
1
-1
-1
1
-1
-1
-1
1
1
-1
-1
-1
1
1
-1
1
1
-1
1
1
1
-1
1
1
1
1
-1
-1
1
1
1
1
-1
-1
1
-1
1
-1
1
1
1
1
1
1
-1
-1
-1
1
1
1
1
-1
1
-1
-1
1
-1
1
-1
-1
1
1
-1
1
1
1
1
-1
-1
-1
-1
-1
1
1...

output:

? 1 2 3
? 1 2 4
? 1 3 4
? 2 3 4
? 4 1 3
? 4 2 1
? 4 1 5
? 4 2 5
? 5 3 4
? 5 2 1
? 5 3 6
? 5 4 6
? 4 3 6
? 6 1 3
? 6 4 5
? 6 2 7
? 6 3 7
? 7 1 3
? 7 2 1
? 7 6 4
? 7 5 8
? 7 1 8
? 8 2 1
? 8 5 2
? 8 7 6
? 8 6 4
? 8 5 9
? 8 4 9
? 8 6 9
? 4 6 9
? 9 8 6
? 9 4 5
? 9 2 10
? 9 6 10
? 9 8 10
? 6 8 10
? 10 2 8...

result:

ok OK, 25847 queries, 20 point in hull

Test #22:

score: 0

Accepted

time: 124ms

memory: 3480kb

input:

5000
1
1
1
-1
-1
1
-1
1
-1
1
1
1
-1
-1
-1
-1
1
1
-1
1
1
1
1
-1
-1
1
1
1
-1
1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
1
-1
-1
-1
1
-1
1
1
-1
1
-1
1
1
-1
1
-1
1
-1
-1
1
1
1
1
-1
1
1
-1
1
1
1
1
-1
1
-1
1
1
1
-1
1
-1
-1
-1
-1
1
-1
1
-1
-1
1
-1
1
1
-1
1
-1
-1
1
-1
1
-1
1
-1
-1
1
-1
-1
1
-1
-1
-1
...

output:

result:

ok OK, 26964 queries, 24 point in hull

Test #23:

score: 0

Accepted

time: 102ms

memory: 3352kb

input:

output:

result:

ok OK, 26905 queries, 21 point in hull