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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#594254#6303. Inversionshiqiaqiaya#WA 61ms34840kbC++201.9kb2024-09-27 20:36:262024-09-27 20:36:27

Judging History

你现在查看的是最新测评结果

  • [2024-09-27 20:36:27]
  • 评测
  • 测评结果:WA
  • 用时:61ms
  • 内存:34840kb
  • [2024-09-27 20:36:26]
  • 提交

answer

#include <bits/stdc++.h>
#define int long long
using namespace std;
mt19937 rnd(time(0));
signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    
    int n;
    cin >> n;

    vector<int> a;
    a.push_back(1);

    vector vis(n + 1, vector<int> (n + 1, -1));
   	vector<int> f(n + 1);

    auto ask = [&](int l, int r) -> int {
    	if (l >= r) return 0;
    	if (vis[l][r] != -1) return vis[l][r];
    	cout << "? " << l << " " << r << endl;
    	int x;
    	cin >> x;
    	return vis[l][r] = x;
    };


    auto compare = [&](int x, int y) -> bool {
    	int a = ask(x, y - 1);
    	int b = ask(x + 1, y);
    	int c = ask(x, y);
    	int d = ask(x + 1, y - 1);
    	if ((a + b + c - d + 2) % 2 == 0) return false;
    	return true;
    };

    auto cp = [&](int x, int y) -> bool {
    	if ((f[x] + f[y]) & 1) {
    		return f[x] ? true : false;
    	}
    	int a = ask(x, y - 1);
    	int b = ask(x + 1, y);
    	int c = ask(x, y);
    	int d = ask(x + 1, y - 1);
    	if ((a + b + c - d + 2) % 2 == 0) return false;
    	return true;
    };

    // int p = rnd() % n + 1;
    // for (int i = 1; i <= n; i++) {
    // 	if (i == p) continue;
    // 	f[i] = compare(min(p, i), max(p, i)) ^ (i > p);
    // }

    vector<int> p;
    for (int i = 2; i <= n; i++) {
    	p.push_back(i);
    }
    random_shuffle(p.begin(), p.end());

    for (int i : p) {
    	int L = 0, R = a.size() - 1, res = -1;
    	while (L <= R) {
    		int mid = (L + R) / 2;
    		if (!cp(a[mid], i)) {
    			res = mid;
    			L = mid + 1;
    		} else {
    			R = mid - 1;
    		}
    	}
    	a.insert(a.begin() + res + 1, i);
    }

    vector<int> ans(n + 1);
    for (int i = 0; i < n; i++) {
    	ans[a[i]] = i + 1;
    }

    cout << "! ";
    for (int i = 1; i <= n; i++) {
    	cout << ans[i] << " \n"[i == n];
    }

    return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 1ms
memory: 3612kb

input:

3
0
1
0

output:

? 1 2
? 2 3
? 1 3
! 2 3 1

result:

ok OK, guesses=3

Test #2:

score: -100
Wrong Answer
time: 61ms
memory: 34840kb

input:

1993
1
1
1
0
1
1
1
1
0
0
0
0
0
0
0
1
0
1
1
1
0
0
1
0
1
1
0
1
0
0
0
0
1
1
0
1
1
1
0
1
1
0
1
0
0
0
1
0
1
1
0
1
0
0
1
1
1
1
0
1
0
0
1
1
1
0
1
1
1
0
1
1
0
1
1
0
0
1
1
0
1
0
0
1
1
1
0
0
1
1
1
0
0
1
1
0
0
0
1
0
0
1
1
1
1
1
0
1
0
1
0
0
1
1
1
0
0
1
1
1
0
0
0
1
0
1
0
0
1
1
1
0
0
1
1
1
0
0
1
1
1
1
0
0
0
0
0
0...

output:

? 1 1205
? 2 1206
? 1 1206
? 2 1205
? 1 1191
? 2 1192
? 1 1192
? 2 1191
? 1 702
? 2 703
? 1 703
? 2 702
? 1 1769
? 2 1770
? 1 1770
? 2 1769
? 1206 1769
? 1207 1770
? 1206 1770
? 1207 1769
? 1 1060
? 2 1061
? 1 1061
? 2 1060
? 1 707
? 2 708
? 1 708
? 2 707
? 708 1132
? 709 1133
? 708 1133
? 709 1132
...

result:

wrong output format Unexpected end of file - int32 expected