#include <iostream>
#include <iomanip>
#include <string>
#include <algorithm>
#include <cmath>
#include <vector>
#include <queue>
#include <map>
#include <set>
#include <unordered_map>
#include <unordered_set>
using namespace std;

#define ll long long
#define nl "\n"
#define cy cout << "YES\n"
#define cn cout << "NO\n"
#define sz(s) s.size()
#define all(v) v.begin(), v.end()
#define cin(vec) for (int i = 0; i < n && cin >> vec[i]; i++)
#define cout(vec) for (int i = 0; i < n && cout << vec[i] << " "; i++)

void sherry()
{
    ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout);
#endif
}
bool is_confusing(int a, int b, int c, int d)
{
    if ((a == 2 && c > 3) || b > 5)
    {
        return false;
    }
    return true;
}
void solve()
{
    int a, b, c, d;
    cin >> a >> c;
    b = a % 10;
    a /= 10;
    d = c % 10;
    c /= 10;
    while (true)
    {
        if (is_confusing(a, b, c, d))
        {
            if (a > 0)
                cout << a;
            cout << b << " " << c;
            if (d > 0)
                cout << d;
            break;
        }
        else
        {
            if (c < 5 && d < 9)
                d++;
            else if (c < 5 && d == 9)
            {
                c++;
                d = 0;
            }
            else if (c == 5 && d < 9)
                d++;
            else if (c == 5 && d == 9)
            {
                if (a == 1 && b < 9)
                {
                    b++;
                }
                else if (a == 1 && b == 9)
                {
                    a = 2;
                    b = 0;
                }
                else if (a == 2 && b < 3)
                    b++;
                else
                {
                    a = 0, b = 0;
                }
                c = 0, d = 0;
            }
        }
    }
}
int main()
{
    sherry();
    ll t = 1;
    // cin >> t;
    while (t--)
    {
        solve();
    }
    return 0;
}