import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        int[] schedules_1 = {700, 800, 1100};
        int[][] timelogs_1 = {
            {710, 2359, 1050, 700, 650, 631, 659},
            {800, 801, 805, 800, 759, 810, 809},
            {1105, 1001, 1002, 600, 1059, 1001, 1100}};
        int startday_1 = 5;
        
        int[] schedules_2 = {730, 855, 700, 720};
        int[][] timelogs_2 = {
            {710, 700, 650, 735, 700, 931, 912},
            {908, 901, 805, 815, 800, 831, 835},
            {705, 701, 702, 705, 710, 710, 711},
            {707, 731, 859, 913, 934, 931, 905}};
        int startday_2 = 1;
        
        //System.out.print(solution(schedules_1, timelogs_1, startday_1));
        System.out.print(solution(schedules_2, timelogs_2, startday_2));
    }
    
    public static int solution(int[] schedules, int[][] timelogs, int startday) {
        int answer = 0;
        
        for(int i = 0; i < schedules.length; i++) {
            boolean check = true;
            String str = String.valueOf(schedules[i]);
            int hour = 0;
            int minute = 0;
            if(str.length() == 4) {
                hour = Integer.parseInt(str.substring(0,2));
                minute = Integer.parseInt(str.substring(2));
            }
            else {
                hour = Integer.parseInt(str.substring(0,1));
                minute = Integer.parseInt(str.substring(1));
            }
            // 10분의 여유 시간
            minute += 10;
            
            // 60분 이상 => 1시
            hour += minute >= 60 ? 1 : 0;
            minute -= minute >= 60 ? 60 : 0;
            
            str = String.valueOf(hour) + (minute == 0 ? "00" : (minute < 10 ? ("0" + minute) : minute));
            //System.out.println("\n직원["+(i+1)+"]희망출근시간:"+schedules[i]+"/희망출근시간+10분:"+str);
            
            int toDay = startday;
            for(int j = 0; j < 7; j++) {
                //String toDay_st = (
                //    toDay == 1 ? "월" :
                //    toDay == 2 ? "화" :
                //    toDay == 3 ? "수" :
                //    toDay == 4 ? "목" :
                //    toDay == 5 ? "금" :
                //    toDay == 6 ? "토" :
                //    toDay == 7 ? "일" : "Error") +
                //    "요일";
                
                //System.out.println(
                //    "출근요일:"+toDay_st+
                //    " / 희망출근시간/실제출근시간/비교결과:"+str+"/"+timelogs[i][j]+"/"+(Integer.parseInt(str) >= timelogs[i][j] && startday < 6));
                if(!(Integer.parseInt(str) >= timelogs[i][j]) && toDay < 6) {
                    check = false;
                    //System.out.println("======== [ 실패 ] ========\n");
                    break;
                }
                
                toDay++;
                if(toDay > 7)
                    toDay = 1;
            }
            if(check)
                answer++;
        }
        
        //System.out.println("\n========= [ Solution Out] =========\n\n");
        return answer;
    }
}