QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#107756 | #5380. Bell Ringing | PetroTarnavskyi# | AC ✓ | 420ms | 36872kb | C++17 | 1.6kb | 2023-05-22 18:52:02 | 2023-05-22 18:52:03 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define SZ(a) (int)a.size()
#define ALL(a) a.begin(), a.end()
#define FOR(i, a, b) for (int i = (a); i<(b); ++i)
#define RFOR(i, b, a) for (int i = (b)-1; i>=(a); --i)
#define MP make_pair
#define PB push_back
#define F first
#define S second
typedef long long LL;
typedef pair<int, int> PII;
typedef vector<int> VI;
VI g[74747];
VI ans;
int deg[74747];
bool used[74747];
int dg;
int md = 6;
void dfs(int v)
{
used[v] = 1;
ans.PB(v);
vector<PII> a;
for (auto to : g[v])
{
if (!used[to])
{
deg[to]--;
a.PB({deg[to] + (rand() % md), to});
}
}
sort(ALL(a));
if (SZ(a))
dfs(a[0].second);
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
srand(40);
int n;
cin >> n;
if (n == 8) md = 12;
VI v(n);
iota(ALL(v), 1);
vector<VI> p;
map<VI, int> mapka;
do
{
mapka[v] = SZ(p);
p.PB(v);
}while(next_permutation(ALL(v)));
FOR(i, 0, SZ(p))
{
FOR (mask, 1, 1 << (n - 1))
{
bool bad = false;
FOR (j, 0, n - 2)
if (((mask >> j) & 3) == 3)
bad = true;
if (bad) continue;
VI p2 = p[i];
FOR(j, 0, n - 1)
if (mask & (1 << j))
swap(p2[j], p2[j + 1]);
int j = mapka[p2];
g[i].PB(j);
deg[i]++;
}
}
dg = deg[0];
int mx = 0;
do
{
ans.clear();
FOR(i, 0, SZ(p))
{
deg[i] = dg;
used[i] = false;
}
dfs(0);
mx = max(mx, SZ(ans));
} while (SZ(ans) != SZ(p));
FOR(i, 0, SZ(ans))
{
FOR(j, 0, n)
{
cout << p[ans[i]][j] << ' ';
}
cout << '\n';
}
cerr << double(clock()) / CLOCKS_PER_SEC << '\n';
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 0ms
memory: 5608kb
input:
2
output:
1 2 2 1
result:
ok Thank you for your great code. It was fantastic.
Test #2:
score: 0
Accepted
time: 3ms
memory: 5456kb
input:
3
output:
1 2 3 1 3 2 3 1 2 3 2 1 2 3 1 2 1 3
result:
ok Thank you for your great code. It was fantastic.
Test #3:
score: 0
Accepted
time: 1ms
memory: 5592kb
input:
1
output:
1
result:
ok Thank you for your great code. It was fantastic.
Test #4:
score: 0
Accepted
time: 3ms
memory: 5460kb
input:
4
output:
1 2 3 4 1 2 4 3 1 4 2 3 1 4 3 2 4 1 2 3 4 1 3 2 4 3 1 2 3 4 1 2 3 1 4 2 1 3 4 2 1 3 2 4 3 1 2 4 3 2 1 4 2 3 4 1 2 4 3 1 4 2 1 3 2 4 1 3 4 2 3 1 4 3 2 1 3 4 2 1 3 2 4 1 2 3 1 4 2 1 3 4 2 1 4 3
result:
ok Thank you for your great code. It was fantastic.
Test #5:
score: 0
Accepted
time: 0ms
memory: 5500kb
input:
5
output:
1 2 3 4 5 1 3 2 4 5 1 3 4 2 5 1 4 3 2 5 1 4 3 5 2 4 1 3 5 2 4 1 5 3 2 1 4 5 3 2 1 5 4 3 2 1 4 5 2 3 4 1 5 2 3 4 1 2 5 3 1 4 2 3 5 4 1 3 2 5 4 3 1 5 2 4 3 1 2 5 3 4 1 2 5 3 1 4 2 5 1 3 4 5 2 1 3 5 4 2 3 1 4 5 2 3 4 1 5 2 3 4 5 1 2 4 3 5 1 2 4 3 5 2 1 4 5 3 1 2 5 4 1 3 2 5 1...
result:
ok Thank you for your great code. It was fantastic.
Test #6:
score: 0
Accepted
time: 8ms
memory: 5932kb
input:
6
output:
1 2 3 4 5 6 1 3 2 4 6 5 1 2 3 4 6 5 1 2 4 3 6 5 1 2 4 3 5 6 2 1 3 4 6 5 1 2 3 6 4 5 1 2 6 3 4 5 1 6 2 3 4 5 6 1 2 3 4 5 6 1 3 2 4 5 1 6 2 3 5 4 1 2 6 3 5 4 1 6 2 5 3 4 6 1 2 5 3 4 6 1 2 3 5 4 1 6 3 2 5 4 1 6 3 2 4 5 6 1 3 2 5 4 6 3 1 2 5 4 6 3 2 1 5 4 6 3 1 2 4 5 6 1 3 4 2 5 6...
result:
ok Thank you for your great code. It was fantastic.
Test #7:
score: 0
Accepted
time: 61ms
memory: 8420kb
input:
7
output:
1 2 3 4 5 6 7 1 2 3 4 5 7 6 2 1 3 5 4 7 6 2 1 3 4 5 6 7 1 2 3 5 4 6 7 2 1 3 4 5 7 6 1 2 4 3 5 7 6 2 1 4 3 5 7 6 1 2 4 3 5 6 7 2 1 4 3 5 6 7 2 1 4 5 3 6 7 1 2 4 5 3 7 6 2 1 4 5 3 7 6 1 2 4 5 3 6 7 1 4 2 5 3 7 6 1 4 2 3 5 6 7 1 4 2 5 3 6 7 4 1 2 3 5 6 7 1 4 2 3 5 7 6 4 1 2 5 3 7 6 ...
result:
ok Thank you for your great code. It was fantastic.
Test #8:
score: 0
Accepted
time: 420ms
memory: 36872kb
input:
8
output:
1 2 3 4 5 6 7 8 1 2 3 5 4 6 8 7 1 2 3 4 5 6 8 7 1 2 3 4 5 8 6 7 1 3 2 4 5 6 8 7 1 3 2 5 4 6 7 8 1 3 2 4 5 6 7 8 1 3 2 5 4 7 6 8 1 2 3 5 4 6 7 8 2 1 3 5 4 6 7 8 1 2 3 5 4 7 6 8 1 2 3 4 5 7 6 8 1 2 3 5 4 7 8 6 1 2 3 4 5 7 8 6 1 3 2 4 5 7 6 8 1 3 2 5 4 7 8 6 1 3 2 4 5 7 8 6 1 2 3 4 5 8...
result:
ok Thank you for your great code. It was fantastic.