Submission #1174567

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1174567	2025-03-27 05:06:48	Pacybwoah	Balanced Tree (info1cup18_balancedtree)	C++20	0 / 100	4097 ms	2000 KiB

balancedtree

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#include<iostream>
#include<vector>
#include<algorithm>
#include<utility>
#include<set>
#include<cmath>
using namespace std;
typedef long long ll;
const int inf = 1e9;
vector<vector<int>> graph;
struct reroot{
    vector<int> vec, dp1, dp2;
    int n;
    reroot(int _n){
        n = _n;
        graph.resize(n + 1);
        vec.resize(n + 1);
        dp1.resize(n + 1);
        dp2.resize(n + 1);
    }
    void set_1(int x){
        vec[x] = 1;
    }
    void dfs1(int node, int parent){
        if(vec[node]) dp1[node] = 0;
        else dp1[node] = inf;
        for(auto &x: graph[node]){
            if(x == parent) continue;
            dfs1(x, node);
            dp1[node] = min(dp1[node], dp1[x] + 1);
 
 
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