This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "icc.h"
#include <bits/stdc++.h>
using namespace std;
const int maxn = 102;
int dsu [maxn];
vector <int> el [maxn];
int dad (int x) {
return dsu[x] = (x == dsu[x] ? x: dad(dsu[x]));
}
void merge (int x, int y){
x = dad(x), y = dad(y);
if (x != y) {
// if (el[x].size() < el[y].size()) swap(x, y);
for (int j: el[y]) el[x].push_back(j);
el[y].clear();
dsu[y] = x;
}
}
int qq (vector <int> a, vector <int> b) {
return query(a.size(), b.size(), a.data(), b.data());
}
void run(int n) {
for (int i = 1; i <= n; i++) {
dsu[i] = i;
el[i].push_back(i);
}
for (int p = 0; p < n - 1; p++){
set <int> s;
vector <int> comp;
for (int j = 1; j <= n; j++) s.insert(dad(j));
for (int k: s) comp.push_back(k);
int m = comp.size();
// shuffle (bt.begin(), bt.end(), std::default_random_engine(std::chrono::system_clock::now().time_since_epoch().count()));
vector <int> a,b;
for (int i = 0; i < 8; i++){
vector <int> v1, v2;
for (int j = 0; j < m; j++){
if (j & (1 << i)) for (int l: el[comp[j]]) v1.push_back(l);
else for (int l: el[comp[j]]) v2.push_back(l);
}
if (qq(v1, v2)) {
a = v1, b = v2;
break;
}
}
// shuffle (a.begin(), a.end(), std::default_random_engine(std::chrono::system_clock::now().time_since_epoch().count()));
// shuffle (b.begin(), b.end(), std::default_random_engine(std::chrono::system_clock::now().time_since_epoch().count()));
int l = 0, r = a.size(), rs1 = -1, rs2 = -1;
sort(a.begin(), a.end());
sort(b.begin(), b.end());
reverse(a.begin(), a.end());
while (l < r) {
int mid = (l + r) / 2;
vector <int> v;
for (int i = 0; i <= mid; i++) v.push_back(a[i]);
if (qq(v, b)) {
rs1 = v.back();
r = mid;
}
else {
l = mid + 1;
}
}
l = 0, r = b.size();
while (l < r) {
int mid = (l + r) / 2;
vector <int> v;
for (int i = 0; i <= mid; i++) v.push_back(b[i]);
if (qq(v, a)) {
rs2 = v.back();
r = mid;
}
else {
l = mid + 1;
}
}
merge(rs1, rs2);
setRoad(rs1, rs2);
}
}
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