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 |
---|---|---|---|---|---|---|---|---|---|
#226207 | #6303. Inversion | Freeuni1 | RE | 1ms | 3500kb | C++14 | 1.8kb | 2023-10-25 18:23:34 | 2023-10-25 18:23:35 |
Judging History
answer
#include<bits/stdc++.h>
#include<bits/extc++.h>
using namespace std;
int dp[42][22][2], d[2003];
int dp1[42][22][2];
int cnt = 0;
vector<int> v;
map<pair<int, int>, int> q;
bool inv(int i1, int i2) {
if (i2 < v.size()) {
int ans = 0;
for (int i = i1; i < v.size(); i ++) {
ans += d[i];
}
//cout << "!" <<i1 << " " << i2 << " " << ans;
return ans&1;
}
if (q[{i1, i2}]) {
return q[{i1, i2}] - 1;
}
cnt ++;
assert(cnt <= 40000);
cout << "? " << i1 << " " << i2 << endl;
int x;
cin >> x;
q[{i1, i2}] = x + 1;
return x;
}
bool grt(int i1, int i2) {
//cout << i1 << " " << i2 << endl;
bool swp = false;
if (i1 > i2) {
swap(i1, i2);
swp = true;
}
if (i2 - i1 == 1) {
return inv(i1, i2) ^ swp;
}
if (i2 - i1 == 2) {
return inv(i1, i2) ^ inv(i1 + 1, i2) ^ inv(i1, i2 - 1) ^ swp;
}
return inv(i1, i2) ^ inv(i1 + 1, i2) ^ inv(i1, i2 - 1) ^ inv(i1 + 1, i2 - 1) ^ swp;
}
main() {
ios::sync_with_stdio(0);
int n;
cin >> n;
vector<int> srt(n + 3);
v.push_back(1);
for (int i = 2; i <= n; i++) {
int l = -1, r = v.size();
while (r - l > 1) {
//cout << l << " " << r << en
int m = (l + r) / 2;
if (grt(v[m], i)) {
r = m;
} else {
l = m;
}
}
v.insert(v.begin() + r, i);
for (int j = r + 1; j < v.size(); j ++) {
d[v[j]] ++;
}
}
for (int i = 0; i < v.size(); i ++) {
srt[v[i]] = i + 1;
}
cout << "! ";
for (int i = 1; i <= n; i ++) {
cout << srt[i] << " ";
}
cout << endl;
}
/*
*/
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 3500kb
input:
3 0 0 1
output:
? 1 2 ? 1 3 ? 2 3 ! 2 3 1
result:
ok OK, guesses=3
Test #2:
score: -100
Runtime Error
input:
1993 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 1 0 1 1 1 1 1 1 1 0 1 1 1 1 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 1 0 0 1 1 0 0 1 1 1 1 0 1 1 0 0 0 1 0 1 1 1 0 1 0 0 1 0 0 0 0 1 0 1 0 0 1 0 1 0 0 1 1 0 1 1 1 0 1 0 0 0 1 1 0 1 1 1 1 1 1 0 0 0 1 0 0 0 0 1 0 1 1 0 1 1 0 0 0 0 1 0 0 1...
output:
? 1 2 ? 1 3 ? 2 3 ? 2 4 ? 3 4 ? 2 5 ? 3 5 ? 1 5 ? 1 4 ? 2 6 ? 3 6 ? 5 6 ? 1 6 ? 1 7 ? 2 7 ? 5 7 ? 6 7 ? 1 8 ? 2 8 ? 3 8 ? 4 8 ? 3 7 ? 4 7 ? 1 9 ? 2 9 ? 8 9 ? 3 9 ? 9 10 ? 5 10 ? 6 10 ? 5 9 ? 6 9 ? 7 10 ? 8 10 ? 7 9 ? 1 11 ? 2 11 ? 1 10 ? 2 10 ? 8 11 ? 9 11 ? 10 11 ? 11 12 ? 8 12 ? 9 12 ? 10 12 ? 2 1...