Submission #862245

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
862245	2023-10-17 20:19:23	Hanksburger	Meetings 2 (JOI21_meetings2)	C++17	100 / 100	266 ms	43160 KiB

meetings2

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#include <bits/stdc++.h>
using namespace std;
int par[200005][20], sz[200005], dep[200005], ans[200005], n, c, x, y, ind, res=1;
vector<pair<int, int> > vec;
vector<int> adj[200005];
void dfs(int u, int p)
{
    sz[u]=1;
    for (int v:adj[u])
    {
        if (v!=p)
        {
            dfs(v, u);
            sz[u]+=sz[v];
        }
    }
    bool ok=1;
    for (int v:adj[u])
    {
        if (sz[v]>n/2)
        {
            ok=0;
            break;
        }
    }
    if (ok && n-sz[u]<=n/2)
        c=x=y=u;
}
void dfs2(int u, int p)
{
 
 
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Compilation message (stderr)

meetings2.cpp: In function 'int main()':
meetings2.cpp:93:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   93 |         while (ind<vec.size() && vec[ind].first>=i/2)
      |                ~~~^~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 16 / 16
• Subtask 3: 80 / 80