Submission #1156006

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1156006	2025-02-23 15:34:45	Pekiban	Capital City (JOI20_capital_city)	C++20	1 / 100	461 ms	37892 KiB

capital_city

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#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int N = 2e5 + 5;
vector<int> g[N], h[N];
int sz[N], c[N], p[N], f[N];
bool vis[N], visC[N], bad[N];
void dfssz(int s, int e = -1) {
    sz[s] = 1;
    for (auto u : g[s]) {
        if (u == e || vis[u]) continue;
        dfssz(u, s);
        sz[s] += sz[u];
    }
}
int centroid(int s, int n, int e = -1) {
    for (auto u : g[s]) {
        if (u == e || vis[u])   continue;
        if (sz[u] > n/2)    return centroid(u, n, s);
    }
    return s;
}
void dfsroot(int s, int e = -1) {
    for (auto u : g[s]) {
        if (u == e || vis[u])   continue;
        p[u] = s;
        dfsroot(u, s);
 
 
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• Subtask 2: 0 / 10
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• Subtask 4: 0 / 59