On this test my AC solution got WA:

void main()
{
    printf("50000\n");
    for(int i=0;i<25003;i++)
    {
        printf("1:00:08\n");
    };
    for(int i=25003;i<50000;i++)
    {
        printf("1:00:07\n");
    }
};

Right answer is 1:00:08 but my program write 1:00:07

Thank you for test. The problem was rejudged, 63 authors lost AC.

Please change russian statment ("все часы идут вразнобой") to ("некоторые часы идут вразнобой")!!! ;)))