Submission #505754

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
505754	2022-01-11 07:33:57	neonaht	Torrent (COI16_torrent)	C++14	100 / 100	338 ms	28388 KiB

torrent

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#include <bits/stdc++.h>
#define st first
#define nd second
#define ll int64_t
using namespace std;
const int SZ=3e5+7;
vector <int> node[SZ];
int dp[SZ],GetA[SZ],GetB[SZ],a,b,go(0);
 
void dfs(int v,int p,int z) {
    if(node[v].size()==1 && v!=a && v!=b) return ;
    vector <int> went;
    
    for(auto x:node[v]) {
        if(x==p || x==z) continue;
        dfs(x,v,z);
        went.emplace_back(dp[x]);
    }
    int mx(0);
    sort(went.begin(),went.end(),greater<int>());
    
    for(int i=0;i<went.size();i++) mx=max(mx,went[i]+i+1);
    dp[v]=mx;
    return ;
}
 
int main(void) {
    cin.tie(0)->ios::sync_with_stdio(false);
    int n,res((int)1e9);
    cin >> n >> a >> b;
 
 
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Compilation message (stderr)

torrent.cpp: In function 'void dfs(int, int, int)':
torrent.cpp:22:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |     for(int i=0;i<went.size();i++) mx=max(mx,went[i]+i+1);
      |                 ~^~~~~~~~~~~~

• Subtask 1: 31 / 31
• Subtask 2: 69 / 69