#include <iostream>
#include <fstream>
#include <algorithm>
#include <math.h>
#include <string>
#include <vector>
#include <stdio.h>
#include <queue>

#define LL long long
#define pb push_back
#define lm 100001
#define MOD 1000000007


using namespace std;

int main()
{

    //freopen("data.txt", "r", stdin);

    scanf("%d%d%d",&n,&m,&k);
    x=0;
    y=0;
    cout<<x<<' '<<y<<"\n";
    cout.flush();
    while(x<200 && y<200)
    {
        x++;
        cout<<x<<' '<<y<<"\n";
        cout.flush();
        y++;
        cout<<x<<' '<<y<<"\n";
        cout.flush();
        y++;
        cout<<x<<' '<<y<<"\n";
        cout.flush();
        x++;
        cout<<x<<' '<<y<<"\n";
        cout.flush();
    }
    return 0;
}