Submission #879762

#TimeUTC-0UsernameProblemLanguageResultExecution timeMemory
8797622023-11-28 05:24:12TAhmed33Papričice (COCI20_papricice)C++98
50 / 110
184 ms25640 KiB
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5 + 25;
vector <int> adj[MAXN];
int sze[MAXN], n, in[MAXN], out[MAXN], t;
set <int> dd[MAXN];
typedef long long ll;
int mn = 1e9; const int bad = -1e9;
void dfs (int pos, int par) {
sze[pos] = 1;
in[pos] = ++t;
int mx = bad;
for (auto j : adj[pos]) {
if (j == par) continue;
dfs(j, pos);
sze[pos] += sze[j];
if (dd[pos].size() < dd[j].size()) swap(dd[pos], dd[j]);
for (auto i : dd[j]) dd[pos].insert(i);
dd[j].clear();
}
dd[pos].insert(sze[pos]);
for (auto i : dd[pos]) {
if (abs(2 * i - sze[pos]) < abs(2 * mx - sze[pos])) {
mx = i;
}
}
if (sze[pos] != 1 && pos != 1) mn = min(mn, max({n - sze[pos], sze[pos] - mx, mx}) - min({n - sze[pos], sze[pos] - mx, mx}));
out[pos] = t;
}
bool check (int x, int y) {
 
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