| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 67765 |
2018-08-15T09:40:14 Z |
reality |
Park (JOI17_park) |
C++17 |
|
197 ms |
1032 KB |
#include "park.h"
#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define ll long long
#define dbg(v) cerr<<#v<<" = "<<v<<'\n'
#define vi vector<int>
#define vl vector <ll>
#define pii pair<int,int>
#define vii vector < pii >
#define mp make_pair
#define db long double
#define pb push_back
#define all(s) s.begin(),s.end()
template < class P , class Q > ostream& operator<<(ostream& stream, pair < P , Q > v){ stream << "(" << v.fi << ',' << v.se << ")"; return stream;}
template < class T > ostream& operator<<(ostream& stream, const vector<T> v){ stream << "[ "; for (int i=0; i<(int)v.size(); i++) stream << v[i] << " "; stream << "]"; return stream;}
template < class T > T smin(T &a,T b) {if (a > b) a = b;return a;}
template < class T > T smax(T &a,T b) {if (a < b) a = b;return a;}
static const int N = 2048;
static int n;
static int mark[N];
static int get(int a,int b,vi v) {
if (a > b)
swap(a,b);
if (!v[a] || !v[b])
return 0;
return Ask(a,b,v.data());
}
static int Go(int a,int b,vi w,vi was) {
const int sz = w.size();
int l = 0,r = sz;
while (l < r) {
int m = (l + r) / 2;
for (int i = 0;i < m;++i)
was[w[i]] = 1;
for (int i = m;i < sz;++i)
was[w[i]] = 0;
if (get(a,b,was))
r = m;
else
l = m + 1;
}
if (!l)
return -1;
for (int i = 0;i < l;++i)
was[w[i]] = 1;
for (int i = l;i < sz;++i)
was[w[i]] = 0;
if (!get(a,b,was))
return -1;
return w[l - 1];
}
set < int > G[N];
void add_edge(int A,int B) {
if (A > B)
swap(A,B);
Answer(A,B);
G[A].insert(B);
G[B].insert(A);
}
vi order;
int W[N];
vi w;
void dfs(int v) {
order.pb(v);
W[v] = 1;
for (auto it : G[v])
if (!W[it] && w[it])
dfs(it);
}
void del(int v) {
w[v] = 0;
for (auto it : G[v])
if (w[it])
del(it);
}
void find_edges(int node) {
mark[node] = 1;
w.resize(n);
for (int i = 0;i < n;++i)
w[i] = mark[i];
for (int i = 0;i < n;++i)
if (i != node && w[i]) {
if (get(node,i,w)) {
order.clear();
for (int j = 0;j < n;++j)
W[j] = w[j];
W[i] = 1;
dfs(i);
vi was(n,0);
do {
vi was(n,0);
was[node] = 1;
int g = Go(node,i,order,was);
if (g != -1)
add_edge(node,g);
while (!order.empty() && order.back() != g)
order.pop_back();
if (!order.empty() && order.back() == g)
order.pop_back();
} while (!order.empty());
} else {
del(i);
}
}
}
static void Next(int node) {
set < int > ss;
vi was(n,0);
for (int i = 0;i < n;++i)
if (!mark[i] && i != node)
ss.insert(i);
else
was[i] = 1;
vi nxt;
do {
nxt.pb(node);
int poss = Go(0,node,vi(all(ss)),was);
if (poss != -1) {
node = poss;
ss.erase(node);
was[node] = 1;
} else {
break;
}
} while (1);
reverse(all(nxt));
for (auto it : nxt)
find_edges(it);
}
void Detect(int T, int NN) {
n = NN;
mark[0] = 1;
for (int i = 1;i < n;++i)
if (!mark[i])
Next(i);
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
3 ms |
376 KB |
Output is correct |
| 2 |
Incorrect |
75 ms |
616 KB |
Wrong Answer[5] |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
127 ms |
1032 KB |
Wrong Answer[5] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
197 ms |
1032 KB |
Wrong Answer[5] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
167 ms |
1032 KB |
Wrong Answer[5] |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
191 ms |
1032 KB |
Wrong Answer[5] |
| 2 |
Halted |
0 ms |
0 KB |
- |
