Submission #860421

#	Time	Username	Problem	Language	Result	Execution time	Memory
860421		jamkel	Teoretičar (COCI18_teoreticar)	C++14	0 / 130	6 ms	8540 KiB

teoreticar

#include <bits/stdc++.h>
using namespace std;
#define st first
#define nd second
typedef long long ll;
int l,r,m;
int kol=1;
int c=0;
map<pair<int,int>,int>ma;
int wynik[500000];
void dfs(int g,vector<vector<int>>&b,vector<pair<int,int>>&j,vector<pair<int,int>>&d, vector<bool>&czy,vector<bool>&czy2)
{
    for(int i=0;i<b[g].size();i++)
    {
        if(min(g,b[g][i])==0)
        {
            if(czy2[max(g,b[g][i])]==true)
            {
            czy2[max(g,b[g][i])]=false;
            dfs(b[g][i],b,j,d,czy,czy2);
            c=(c+1)%2;
            }
        }
        else
        {
        if(czy[ma[{min(g,b[g][i]),max(g,b[g][i])}]]==true)
        {
            czy[ma[{min(g,b[g][i]),max(g,b[g][i])}]]=false;
            dfs(b[g][i],b,j,d,czy,czy2);
            if(c==0)
            {
                j.push_back({min(g,b[g][i]),max(g,b[g][i])});
            }
            else
            {
                d.push_back({min(g,b[g][i]),max(g,b[g][i])});
            }
            c=(c+1)%2;
        }
        }
    }
}
void q(vector<pair<int,int>>&a,vector<bool>&czy,vector<bool>&czy2)
{
    
    vector<vector<int>>b(l+r+1);
    for(int i=0;i<a.size();i++)
    {
        b[a[i].nd].push_back(a[i].st);
        b[a[i].st].push_back(a[i].nd);
    }
    bool p=true;
    for(int i=1;i<b.size();i++)
    {
        if(b[i].size()>1)
        {
            p=false;
            break;
        }
    }
    if(p)
    {
        for(int i=0;i<a.size();i++)
        {
            wynik[ma[a[i]]]=kol;
        }
        kol++;
        return;
    }
     for(int i=1;i<b.size();i++)
    {
        if(b[i].size()%2==1)
        {
            b[i].push_back(0);
            b[0].push_back(i);
            czy2[i]=true;;
        }
    }
    for(int i=0;i<a.size();i++)
    {
        czy[ma[a[i]]]=true;
    }
    vector<pair<int,int>>j;
    vector<pair<int,int>>d;
    
    for(int i=0;i<l+r+1;i++)
    {
        dfs(i,b,j,d,czy,czy2);
    }
    q(j,czy,czy2);
    q(d,czy,czy2);
}
 
int main()
{
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    cin>>l>>r>>m;
    vector<bool>czy(m);
    vector<bool>czy2(l+r+1);
    vector<pair<int,int>>a(m);
    for(int i=0;i<m;i--)
    {
        cin>>a[i].st>>a[i].nd;
        a[i].nd+=l;
        ma[a[i]]=i;
    }

    q(a,czy,czy2);
    cout<<kol-1<<endl;
    for(int i=0;i<m;i++)
    {
        cout<<wynik[i]<<'\n';
    }
}

Compilation message (stderr)

teoreticar.cpp: In function 'void dfs(int, std::vector<std::vector<int> >&, std::vector<std::pair<int, int> >&, std::vector<std::pair<int, int> >&, std::vector<bool>&, std::vector<bool>&)':
teoreticar.cpp:13:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for(int i=0;i<b[g].size();i++)
      |                 ~^~~~~~~~~~~~
teoreticar.cpp: In function 'void q(std::vector<std::pair<int, int> >&, std::vector<bool>&, std::vector<bool>&)':
teoreticar.cpp:47:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     for(int i=0;i<a.size();i++)
      |                 ~^~~~~~~~~
teoreticar.cpp:53:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |     for(int i=1;i<b.size();i++)
      |                 ~^~~~~~~~~
teoreticar.cpp:63:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         for(int i=0;i<a.size();i++)
      |                     ~^~~~~~~~~
teoreticar.cpp:70:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |      for(int i=1;i<b.size();i++)
      |                  ~^~~~~~~~~
teoreticar.cpp:79:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |     for(int i=0;i<a.size();i++)
      |                 ~^~~~~~~~~

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