#include <bits/stdc++.h>
using namespace std;
#include "park.h"
//#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
static int Place[1400], p2[1400];
const int szz = 8;
void dnc(vector <int> shit){
if(shit.size() <= 1)return;
if(shit.size() <= szz){
for(int i = 0; i < (int)shit.size(); i++){
for(int j = i + 1; j < (int)shit.size(); j++){
int x = shit[i], y = shit[j];
Place[x] = Place[y] = 1;
if(x > y)swap(x, y);
if(Ask(x, y, Place))Answer(x, y);
Place[x] = Place[y] = 0;
}
}
return;
}
vector <int> nxtstuff, die[7];
int bru = shit[rng()%shit.size()];
for(int i = 0; i < (int)shit.size(); i++){
if(shit[i] == bru)continue;
Place[bru] = Place[shit[i]] = 1;
int a = bru, b = shit[i];
if(a > b)swap(a, b);
if(Ask(a, b, Place)){
nxtstuff.push_back(shit[i]);
Answer(a, b);
}
Place[bru] = Place[shit[i]] = 0;
}
for(int i = 0; i < 1400; i++)p2[i] = 0;
for(auto i : shit)p2[i] = 1;
for(auto i : shit){
if(i == bru)continue;
bool f = 0;
for(auto j : nxtstuff)if(i == j)f = 1;
if(f)continue;
int lo = 0, hi = (int)nxtstuff.size() - 2, tmp = (int)nxtstuff.size() - 1;
while(lo <= hi){
int mid = (lo + hi) >> 1;
for(int k = mid + 1; k < (int)nxtstuff.size(); k++)p2[nxtstuff[k]] = 0;
int a = bru, b = i;
if(a > b)swap(a, b);
int res = Ask(a, b, p2);
for(auto k : nxtstuff)p2[k] = 1;
if(res){
tmp = mid;
hi = mid - 1;
}
else lo = mid + 1;
}
die[tmp].push_back(i);
}
for(int i = 0; i < (int)nxtstuff.size(); i++){
die[i].push_back(nxtstuff[i]);
dnc(die[i]);
}
}
set <int> adj[1405];
int sz[1405], block[1405], up[1405];
vector <pi> what;
void comp(int x, int par){
sz[x] = 1;
up[x] = par;
for(auto i : adj[x])if(i != par && !block[i])comp(i, x), sz[x] += sz[i];
what.push_back({sz[x], x});
}
bool cmp(pi a, pi b){
if(a.fi != b.fi)return a.fi < b.fi;
else return rng()%2;
}
void Detect(int T, int N) {
if(T == 1){
for(int i = 0; i < N; i++){
for(int j = i + 1; j < N; j++){
Place[i] = Place[j] = 1;
if(Ask(i, j, Place))Answer(i, j);
Place[i] = Place[j] = 0;
}
}
return;
}
/*
vector <int> lol;
for(int i = 0; i < N; i++)lol.push_back(i);
shuffle(lol.begin(), lol.end(), rng);
dnc(lol);
*/
vector <pi> fku;
int val[N];
for(int i = 1; i < N; i++){
int lo = 0, hi = N - 1, tmp = hi;
while(lo <= hi){
int mid = (lo + hi) >> 1;
for(int j = 0; j <= mid; j++)Place[j] = 1;
for(int j = mid + 1; j < N; j++)Place[j] = 0;
Place[0] = Place[i] = 1;
if(Ask(0, i, Place))tmp = mid, hi = mid - 1;
else lo = mid + 1;
}
fku.push_back({tmp, i});
}
sort(fku.begin(), fku.end(), cmp);
for(auto [bb, i] : fku){
int hd = 0, res = -1;
for(int j = 0; j < N; j++)block[j] = 0;
while(1){
what.clear();
comp(hd, -1);
if(sz[hd] == 1){
break;
}
sort(what.begin(), what.end());
pi bruh = {sz[hd] / 2, 0};
int tmp = lower_bound(what.begin(), what.end(), bruh) - what.begin();
if(tmp == (int)what.size())tmp--;
int fin = (tmp ? (abs(what[tmp].fi - sz[hd] / 2) < abs(what[tmp - 1].fi - sz[hd] / 2) ? tmp : tmp - 1) : tmp);
fin = what[fin].se;
for(int a = 0; a < N; a++)Place[a] = 1;
Place[fin] = 0;
if(Ask(0, i, Place)){
//not in subtree
block[fin] = 1;
}
else{
hd = fin;
if(up[fin] != -1)block[up[fin]] = 1;
}
}
int repl = -1;
vector <int> bruh;
for(auto j : adj[hd]){
for(int a = 0; a < N; a++)Place[a] = 1;
Place[i] = 0;
if(j && !Ask(0, j, Place)){
bruh.push_back(j);
repl = j;
}
}
if(!bruh.empty()){
for(auto a : bruh){
adj[hd].erase(a);
adj[a].erase(hd);
adj[i].insert(a);
adj[a].insert(i);
}
adj[hd].insert(i);
adj[i].insert(hd);
}
else adj[hd].insert(i), adj[i].insert(hd);
}
for(int i = 0; i < N; i++){
for(auto j : adj[i]){
//cout << j << ' ';
if(j > i)Answer(i, j);
}
}
}
Compilation message
park.cpp: In function 'void Detect(int, int)':
park.cpp:120:15: warning: unused variable 'res' [-Wunused-variable]
120 | int hd = 0, res = -1;
| ^~~
park.cpp:145:7: warning: variable 'repl' set but not used [-Wunused-but-set-variable]
145 | int repl = -1;
| ^~~~
park.cpp:105:6: warning: unused variable 'val' [-Wunused-variable]
105 | int val[N];
| ^~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
4 ms |
348 KB |
Output is correct |
| 3 |
Correct |
4 ms |
348 KB |
Output is correct |
| 4 |
Correct |
3 ms |
348 KB |
Output is correct |
| 5 |
Correct |
4 ms |
348 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
210 ms |
916 KB |
Output is correct |
| 2 |
Correct |
185 ms |
676 KB |
Output is correct |
| 3 |
Correct |
176 ms |
884 KB |
Output is correct |
| 4 |
Correct |
212 ms |
1064 KB |
Output is correct |
| 5 |
Correct |
202 ms |
676 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
349 ms |
648 KB |
Output is correct |
| 2 |
Correct |
347 ms |
604 KB |
Output is correct |
| 3 |
Runtime error |
60 ms |
864 KB |
Execution killed with signal 6 |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
184 ms |
604 KB |
Output is correct |
| 2 |
Runtime error |
49 ms |
852 KB |
Execution killed with signal 6 |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
542 ms |
620 KB |
Wrong Answer[5] |
| 2 |
Halted |
0 ms |
0 KB |
- |
