Submission #307686

#	Time	Username	Problem	Language	Result	Execution time	Memory
307686		CodePlatina	Stations (IOI20_stations)	C++14	0 / 100	912 ms	1272 KiB

stations

#include "stations.h"
#include <vector>

using namespace std;

vector<int> gph[1010];
int ord[1010];
int cnt = 0;

void dfs(int x)
{
    ord[x] = ++cnt;
    for(auto y : gph[x]) if(!ord[y]) dfs(y);
}

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

int find_next_station(int s, int t, vector<int> c)
{
    int mn = (int)1e9, mn2 = (int)1e9;
    for(int x : c)
    {
        if(mn2 > x) swap(x, mn2);
        if(mn > mn2) swap(mn, mn2);
    }
    int n = (mn2 == (int)1e9 ? c[0] + 1 : mn2 - 1);
    if(s <= n && n <= t)
    {
        for(int x : c) if(n <= x && x <= t) return x;
    }
    else return mn;
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:45:1: warning: control reaches end of non-void function [-Wreturn-type]
   45 | }
      | ^

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