QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#304539 | #8004. Bit Component | ucup-team228# | WA | 1ms | 7964kb | C++17 | 3.1kb | 2024-01-13 20:56:36 | 2024-01-13 20:56:36 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
struct DSU {
static const int N = 2e5 * 20 + 10;
int Parent[N], Rank[N], Size[N], cnt;
void init(int n) {
for (int i = 1; i <= n; i++) {
Parent[i] = i, Rank[i] = 0, Size[i] = 1;
}
cnt = n;
}
int find(int v) {
if (Parent[v] == v) return v;
else return Parent[v] = find(Parent[v]);
}
void unite(int u, int v) {
u = find(u), v = find(v);
if (u == v) return;
if (Rank[u] < Rank[v]) swap(u, v);
if (Rank[v] == Rank[u]) Rank[u]++;
Parent[v] = u, cnt--;
Size[u] += Size[v];
}
} dsu;
bool getbit(int mask, int bit) {
return mask & (1 << bit);
}
bool check(int n, int b, const vector<int>& a) {
int tot = 0;
for (int i = 0; i < n; i++) {
tot += __builtin_popcount(a[i]);
}
dsu.init(n * b);
for (int i = 0; i < n; i++) {
for (int j = 0; j + 1 < b; j++) {
if (getbit(a[i], j) && getbit(a[i], j + 1)) {
dsu.unite(i * b + j + 1, i * b + j + 2);
}
}
}
for (int i = 0; i + 1 < n; i++) {
for (int j = 0; j < b; j++) {
if (getbit(a[i], j) && getbit(a[i + 1], j)) {
dsu.unite(i * b + j + 1, (i + 1) * b + j + 1);
}
}
}
return n * b - tot + 1 == dsu.cnt;
}
void foo() {
const int n = 9;
const int b = 6;
vector<int> a(n);
iota(a.begin(), a.end(), 1);
bool ok = false;
do {
if (check(n, b, a)) {
cout << "YES\n";
for (int x : a) {
cout << x << "\t" << bitset<b>(x) << "\n";
}
ok = true;
break;
}
} while (next_permutation(a.begin(), a.end()));
if (!ok) {
cout << "NO\n";
}
exit(0);
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
#ifdef LOCAL
freopen("input.txt", "r", stdin);
#endif
// foo();
int n;
cin >> n;
vector<int> ans = {1, 3, 2, 6, 4, 5, 7};
bool ok = false;
while (ans.size() < max(4 * n, 100)) {
vector<int> tmp = ans;
reverse(tmp.begin(), tmp.end());
for (int& x : ans) {
x <<= 1;
}
for (int x : tmp) {
ans.push_back((x << 1) | 1);
}
ans.push_back(1);
if (ans.size() >= n) {
vector<int> cur;
for (int x : ans) {
if (x <= n) {
cur.push_back(x);
}
}
if (check(n, 20, cur)) {
cout << "YES\n";
for (int x : cur) {
cout << x << " ";
}
cout << "\n";
ok = true;
break;
}
}
}
if (!ok) {
cout << "NO\n";
}
#ifdef LOCAL
cout << "\nTime elapsed: " << double(clock()) / CLOCKS_PER_SEC << " s.\n";
#endif
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 7736kb
input:
1
output:
YES 1
result:
ok answer is 1
Test #2:
score: 0
Accepted
time: 0ms
memory: 7932kb
input:
2
output:
NO
result:
ok answer is 0
Test #3:
score: 0
Accepted
time: 0ms
memory: 7736kb
input:
3
output:
YES 2 3 1
result:
ok answer is 1
Test #4:
score: 0
Accepted
time: 1ms
memory: 7944kb
input:
4
output:
NO
result:
ok answer is 0
Test #5:
score: 0
Accepted
time: 1ms
memory: 7664kb
input:
5
output:
NO
result:
ok answer is 0
Test #6:
score: 0
Accepted
time: 1ms
memory: 7716kb
input:
6
output:
NO
result:
ok answer is 0
Test #7:
score: 0
Accepted
time: 0ms
memory: 7688kb
input:
7
output:
YES 2 6 4 5 7 3 1
result:
ok answer is 1
Test #8:
score: 0
Accepted
time: 1ms
memory: 7964kb
input:
8
output:
NO
result:
ok answer is 0
Test #9:
score: 0
Accepted
time: 1ms
memory: 7652kb
input:
9
output:
NO
result:
ok answer is 0
Test #10:
score: 0
Accepted
time: 1ms
memory: 7724kb
input:
10
output:
NO
result:
ok answer is 0
Test #11:
score: 0
Accepted
time: 1ms
memory: 7664kb
input:
11
output:
NO
result:
ok answer is 0
Test #12:
score: 0
Accepted
time: 1ms
memory: 7708kb
input:
12
output:
NO
result:
ok answer is 0
Test #13:
score: 0
Accepted
time: 0ms
memory: 7736kb
input:
13
output:
YES 2 6 4 12 8 10 11 9 13 5 7 3 1
result:
ok answer is 1
Test #14:
score: 0
Accepted
time: 1ms
memory: 7664kb
input:
14
output:
YES 2 6 4 12 8 10 14 11 9 13 5 7 3 1
result:
ok answer is 1
Test #15:
score: 0
Accepted
time: 1ms
memory: 7616kb
input:
15
output:
YES 2 6 4 12 8 10 14 15 11 9 13 5 7 3 1
result:
ok answer is 1
Test #16:
score: 0
Accepted
time: 1ms
memory: 7664kb
input:
16
output:
NO
result:
ok answer is 0
Test #17:
score: 0
Accepted
time: 1ms
memory: 7724kb
input:
17
output:
NO
result:
ok answer is 0
Test #18:
score: 0
Accepted
time: 1ms
memory: 7876kb
input:
23
output:
NO
result:
ok answer is 0
Test #19:
score: 0
Accepted
time: 0ms
memory: 7752kb
input:
24
output:
NO
result:
ok answer is 0
Test #20:
score: -100
Wrong Answer
time: 1ms
memory: 7672kb
input:
25
output:
NO
result:
wrong answer Jury has the answer, participant doesn't