#include <bits/stdc++.h>
using namespace std;
#define ll long long int
#define ld long double
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define PI 3.14159265
#define fast ios::sync_with_stdio(false),cin.tie(NULL),cout.tie(NULL)
typedef pair<ll,ll> pli;
typedef pair<int,int> pii;
typedef pair<ld,ld> pld;
ll MOD=1000000007 ;
ll MX=1000000000000000;

ll n;
ll k,m;
int main()
{
    fast;
    //freopen("input.txt","r",stdin);
    cin>>n>>k>>m;
    ll x,y;
    ll t1=0;
    ll t2=0;
    ll sum=0;
    for(int i=1;i<=n;i++)
    {
        cin>>x>>y;
        x=x%2;
        y=y%2;
        sum+=x;
        if((x+y)%2==0)
        {
            t1++;
        }
        else
        {
            t2++;
        }
    }
    sum=sum%2;
    ll res;
    if(t2==0)
    {
        if(sum==m)
        {
            res=1;
        }
        else
        {
            res=2;
        }
    }
    else if(t1==0)
    {
        if(sum==m)
        {
            if(k%2==0)
                res=1;
            else
                res=2;
        }
        else
        {
            if(k%2==1)
                res=1;
            else
                res=2;
        }
    }
    else
    {
        if(k%2==0)
            res=2;
        else
            res=2;
    }
    cout<<res<<endl;

    return 0;
}