Submission #1155406

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1155406	2025-02-22 12:57:01	kitkat12	Race (IOI11_race)	C++20	0 / 100	4 ms	9024 KiB

race

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
#define mp make_pair
#define pb push_back
#define li(i,a,b) for(int (i) = (a); (i)<(b); i++)
#define all(v) v.begin(), v.end()
#define mem(name, val) memset(name, val, sizeof(name))
#define endl '\n'
const int nmax = 2e5+3;
const int kmax = 1e6+3;
int n,k,ans, cnt[kmax], sz[nmax], r[nmax];
vector<pii> adj[nmax];
int dfs_sz(int v, int p = -1){
    sz[v]=1;
    for(auto [u,len] : adj[v]){
        if(u == p || r[u]) continue;
        sz[v] += dfs_sz(u,v);
    }
    return sz[v]; 
}
int get_center(int v, int ts, int p = -1){
    for(auto [u,len] : adj[v]){
        if(u == p || r[u]) continue; 
        if(sz[u] * 2 > n) return get_center(u,ts,v);
    }
 
 
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• Subtask 1: 0 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 22
• Subtask 4: 0 / 57