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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#594216 | #6303. Inversion | shiqiaqiaya# | WA | 45ms | 34880kb | C++20 | 1.8kb | 2024-09-27 20:20:42 | 2024-09-27 20:20:42 |
Judging History
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;
// cout << p << "\n";
for (int i = 1; i <= n; i++) {
if (i == p) continue;
f[i] = compare(min(p, i), max(p, i)) ^ (i > p);
}
for (int i = 2; i <= n; i++) {
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] << " ";
}
cout << endl;
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3660kb
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: 45ms
memory: 34880kb
input:
1993 1 1 0 0 0 1 0 0 0 1 1 0 1 0 1 0 1 0 0 1 1 0 1 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0 0 1 1 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 1 0 1 1 0 1 0 0 1 0 0 1 1 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 0 1 1 0 1 0 0 1 0 1 0 1 1 0 0 1 0 1 0 0 1 1 1 0 0 1 1 1 1 1 0 0 1 0 1 0...
output:
? 1 108 ? 2 109 ? 1 109 ? 2 108 ? 3 109 ? 3 108 ? 4 109 ? 4 108 ? 5 109 ? 5 108 ? 6 109 ? 6 108 ? 7 109 ? 7 108 ? 8 109 ? 8 108 ? 9 109 ? 9 108 ? 10 109 ? 10 108 ? 11 109 ? 11 108 ? 12 109 ? 12 108 ? 13 109 ? 13 108 ? 14 109 ? 14 108 ? 15 109 ? 15 108 ? 16 109 ? 16 108 ? 17 109 ? 17 108 ? 18 109 ? 1...
result:
wrong output format Unexpected end of file - int32 expected