#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <cmath>
#include <ctime>
#include <iostream>
#include <algorithm>
#include <string>
#include <iomanip>

#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <set>
#include <map>
#include <list>
using namespace std;
#define endl "\n"



void create_test(){
    const int N = 2000;
    cout << N << endl;
    for (int i = 0; i < N; ++i) {
        for (int j = 0; j < N; ++j)
            cout << int(1e9) << (j + 1 == N ? "" : " ");
        if (i + 1 < N)
            cout << endl;
    }
}

int main() {
#ifdef KVARK
    freopen("D:/workspaces/contest/task/input.txt", "w", stdout);
#else
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
#endif

    srand(time(0));
    create_test();

    return 0;
}