#include <algorithm>
#include <iostream>
#include <assert.h>
#include <stdlib.h>
#include <cstring>
#include <cstdlib>
#include <stdio.h>
#include <cstdio>
#include <string>
#include <vector>
#include <deque>
#include <queue>
#include <cmath>
#include <math.h>
#include <map>
#include <set>
#include <time.h>
#include <bitset>

using namespace std;
#define y1 google
#define INF 1000000000000000000LL
#define inf 2147483647
#define MOD 1000000007
#define pf push_front
#define pb push_back
#define mp make_pair
#define FI first
#define SI second
#define fname ""

using namespace std;

typedef long long ll;

const int N = 200005;
const double eps = 1e-9;

int was[N];
int main(){
    //srand(time(NULL));
    freopen(".in", "w", stdout);
    ios_base::sync_with_stdio(0);
    long long x = 0;
        asm("rdtsc" : "=A"(x));
        srand(x);
    cout << 1441 << endl;
    for (int ob = 0; ob <= 1440; ob++) {
        int th = ob / 60 % 24;
        int ts = ob % 60;
        if (th < 10)
            cout << 0;
        cout << th;
        cout << ":";
        if (ts < 10)
            cout << 0;
        cout << ts;
        cout << endl;
        cout << rand() % 10001 << endl;
    }
    return 0;
}