Submission #447220

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
447220	2021-07-25 07:54:08	blue	Mergers (JOI19_mergers)	C++17	100 / 100	1346 ms	160932 KiB

mergers

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#include <iostream>
#include <set>
#include <vector>
#include <set>
using namespace std;
const int maxN = 500'000;
vector<int> edge[1+maxN];
vector<int> parent(1+maxN, 0);
vector<int> subtree(1+maxN, 1);
vector<int> max_child(1+maxN, -1);
int rt = 1;
void dfs1(int u)
{
    for(int v: edge[u])
    {
        if(parent[u] == v) continue;
        parent[v] = u;
        dfs1(v);
        subtree[u] += subtree[v];
        if(max_child[u] == -1 || subtree[v] > subtree[ max_child[u] ])
            max_child[u] = v;
    }
}
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 24 / 24
• Subtask 3: 14 / 14
• Subtask 4: 22 / 22
• Subtask 5: 30 / 30