Submission #826620

#	Time	Username	Problem	Language	Result	Execution time	Memory
826620		Marco_Escandon	Stations (IOI20_stations)	C++17	0 / 100	733 ms	696 KiB

stations

#include <vector>
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll vis=0;
vector<int> sol;
vector<vector<ll>> cad;
void dfs(ll node,ll p, ll p2)
{
    if(p2%2==0)
    {
        sol[node]=vis;
        vis++;
    }

    for(auto i:cad[node])
    {
        if(i!=p)
        {
            dfs(i,node,p2+1);
        }
    }
    if(p2%2==1)
    {
        sol[node]=vis;
        vis++;
    }
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
    cad.assign(n+5,vector<ll>());
    for(int i=0; i<u.size(); i++)
    {
        cad[u[i]].push_back(v[i]);
        cad[v[i]].push_back(u[i]);
    }
    sol.clear();;
    sol.assign(n,0);
    dfs(0,-1,2);
	return sol;
}

int find_next_station(int s, int t, std::vector<int> c) {
    return 0;
	sort(c.begin(), c.end());
	if(c.size()==1)return c[0];
	ll pl=0;
	for(auto i:c)
    {
        if(i>s)
            pl++;
    }
    if(pl==0)
    {
        if(c[0]>=t||s<t)
            return c[0];
        for(int i=0; i<c.size()-1; i++)
        {
            if(c[i]<=t&&c[i+1]>=t)
                return c[i+1];
        }

            return c[0];
    }
    else
    {
        if(c.back()<=t||t<s)
            return c.back();
        for(int i=0; i<c.size(); i++)
        {
            if(c[i]>=t)
                return c[i];
        }
        return c.back();
    }
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i=0; i<u.size(); i++)
      |                  ~^~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:56:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |         for(int i=0; i<c.size()-1; i++)
      |                      ~^~~~~~~~~~~
stations.cpp:68:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |         for(int i=0; i<c.size(); i++)
      |                      ~^~~~~~~~~

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