Submission #544973

#	Time	Username	Problem	Language	Result	Execution time	Memory
544973		PiejanVDC	Stations (IOI20_stations)	C++17	0 / 100	3064 ms	2097152 KiB

stations

#include <bits/stdc++.h>
#include "stations.h"

using namespace std;

const int mxN = 1005;

vector<bitset<mxN>>mp(mxN);

vector<int>adj[mxN];

void dfs(int u, int e = -1) {
    mp[u] |= 1 << u;
    for(auto z : adj[u]) if(z != e) {
        dfs(z,u);
        mp[u] |= mp[z];
    }
}

vector<int>label(int n, int k, vector<int>u, vector<int>v) {
    for(int i = 0 ; i < n-1 ; i++)
        adj[u[i]].push_back(v[i]), adj[v[i]].push_back(u[i]);
    vector<int>ret(n);
    for(int i = 0 ; i < n ; i++) {
        dfs(i);
        ret[i] = i;
    }
    return ret;
}

int find_next_station(int s, int t, vector<int>c) {
    for(auto z : c) {
        if(mp[z][t])
            return z;
    }
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type]
   36 | }
      | ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61