#include "sphinx.h"
#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>
#include <queue>
#include <set>
typedef long long llong;
const int MAXN = 250 + 10;
const int INF = 1e9;
int n, m;
int color[MAXN];
struct DSU
{
int par[MAXN];
std::vector <int> inComponent[MAXN];
void build()
{
for (int i = 1 ; i <= n ; ++i)
{
par[i] = i;
inComponent[i].push_back(i);
}
}
int find(int node)
{
if (par[node] == node) return node;
return par[node] = find(par[node]);
}
void connect(int u, int v)
{
u = find(u);
v = find(v);
if (u == v)
{
return;
}
if (inComponent[u].size() > inComponent[v].size())
{
std::swap(u, v);
}
par[u] = v;
for (const int &x : inComponent[u])
{
inComponent[v].push_back(x);
}
}
bool areConnected(int u, int v)
{
return find(u) == find(v);
}
};
struct DSU2
{
int par[MAXN];
int dep[MAXN];
void build()
{
for (int i = 1 ; i <= n ; ++i)
{
par[i] = i;
dep[i] = 1;
}
}
int find(int node)
{
if (par[node] == node) return node;
return par[node] = find(par[node]);
}
void connect(int u, int v)
{
u = find(u);
v = find(v);
if (u == v)
{
return;
}
if (dep[u] > dep[v])
{
std::swap(u, v);
}
if (dep[u] == dep[v])
{
dep[v]++;
}
par[u] = v;
}
bool areConnected(int u, int v)
{
return find(u) == find(v);
}
};
DSU dsu;
DSU2 dsuQuery;
bool isActive[MAXN];
bool inQueue[MAXN];
std::vector <int> g[MAXN];
int edgeFrom[MAXN * MAXN];
int edgeTo[MAXN * MAXN];
bool wasSeen[MAXN];
int getWorstCase()
{
dsuQuery.build();
for (int i = 1 ; i <= m ; ++i)
{
if (dsu.areConnected(edgeFrom[i], edgeTo[i]) || (color[edgeFrom[i]] != -1 && color[edgeTo[i]] != -1 && color[edgeFrom[i]] == color[edgeTo[i]]))
{
dsuQuery.connect(edgeFrom[i], edgeTo[i]);
}
}
int res = 0;
std::fill(wasSeen, wasSeen + n + 1, 0);
for (int i = 1 ; i <= n ; ++i)
{
res += !wasSeen[dsuQuery.find(i)];
wasSeen[dsuQuery.find(i)] = true;
}
return res;
}
int query()
{
std::vector <int> exp_col(n);
for (int i = 1 ; i <= n ; ++i)
{
exp_col[i - 1] = color[i];
}
return perform_experiment(exp_col);
}
std::vector <int> find_colours(int N, std::vector <int> X, std::vector <int> Y)
{
n = N;
m = X.size();
for (int i = 0 ; i < m ; ++i)
{
X[i]++;
Y[i]++;
edgeFrom[i + 1] = X[i];
edgeTo[i + 1] = Y[i];
g[X[i]].push_back(Y[i]);
g[Y[i]].push_back(X[i]);
}
std::fill(color + 1, color + 1 + n, n);
dsu.build();
std::queue <int> q;
inQueue[1] = true;
q.push(1);
while (q.size())
{
int node = q.front();
q.pop();
// std::cout << "node: " << node << '\n';
isActive[node] = true;
std::set <int> set;
for (const int &u : g[node])
{
if (isActive[u])
{
set.insert(dsu.find(u));
}
}
std::fill(color + 1, color + 1 + n, n);
for (const int &comp : set)
{
for (const int &u : dsu.inComponent[comp])
{
color[u] = -1;
}
}
color[node] = -1;
int cnt = getWorstCase();
int res = query();
if (cnt != res)
{
assert(set.size());
std::vector <int> vals;
for (const int &comp : set)
{
vals.push_back(comp);
}
int l = -1, r = (int)vals.size() - 1, mid;
while (l < r - 1)
{
mid = l + r >> 1;
std::fill(color + 1, color + 1 + n, n);
for (int i = 0 ; i <= mid ; ++i)
{
for (const int &u : dsu.inComponent[vals[i]])
{
color[u] = -1;
}
}
color[node] = -1;
cnt = getWorstCase();
res = query();
if (res == cnt) l = mid;
else r = mid;
}
// std::cout << "connect: " << node << ' ' << vals[r] << '\n';
dsu.connect(node, vals[r]);
}
for (const int &u : g[node])
{
if (!inQueue[u])
{
inQueue[u] = true;
q.push(u);
}
}
}
std::vector <int> sol;
for (int i = 1 ; i <= n ; ++i)
{
sol.push_back(dsu.find(i) - 1);
}
return sol;
}
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