Submission #871325

#	Time	Username	Problem	Language	Result	Execution time	Memory
871325		andrei_boaca	Stations (IOI20_stations)	C++17	0 / 100	586 ms	940 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
#include <vector>
//#include "stub.cpp"
using namespace std;
vector<int> muchii[1005];
bool use[1005];
int n,k;
vector<int> ord;
void dfs(int nod)
{
    use[nod]=1;
    ord.push_back(nod);
    for(int i:muchii[nod])
        if(!use[i])
            dfs(i);
}
std::vector<int> label(int N, int K, std::vector<int> u, std::vector<int> v)
{
    n=N;
    k=K;
    vector<int> L;
    L.resize(n);
    for(int i=0;i<u.size();i++)
    {
        int a=u[i];
        int b=v[i];
        muchii[a].push_back(b);
        muchii[b].push_back(a);
    }
    int root=0;
    for(int i=0;i<n;i++)
        if(muchii[i].size()==1)
        {
            root=i;
            break;
        }
    dfs(root);
    for(int i=0;i<ord.size();i++)
        L[ord[i]]=i;
    return L;
}

int find_next_station(int s, int t, std::vector<int> c)
{
    if(s<t)
    {
        int maxim=-1;
        for(int i:c)
            maxim=max(maxim,i);
        return maxim;
    }
    if(s>t)
    {
        int minim=1e9;
        for(int i:c)
            minim=min(minim,i);
        return minim;
    }
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for(int i=0;i<u.size();i++)
      |                 ~^~~~~~~~~
stations.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for(int i=0;i<ord.size();i++)
      |                 ~^~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:60:1: warning: control reaches end of non-void function [-Wreturn-type]
   60 | }
      | ^

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