C :

#include<stdio.h>
main() {
	int m,n,x,a,c,d,e;
	char b;
	scanf("%d\n",&m);
	scanf("%d%c%d\n",&a,&b,&c);
	scanf("%d%c%d",&d,&b,&e);
	if(b==':') {
		if(a==d) {
			n=e-c;
			if(m%n==0) {
				x=m/n;
			} else x=m/n+1;
			printf("%d\n",x);
		}
		if(a<d) {
			n=60-c+e;
			if(m%n==0) {
				x=m/n;
			} else x=m/n+1;
			printf("%d\n",x);
		}
	}

}

C++ :

#include<bits/stdc++.h>
using namespace std;
int sumx(char a[]){
	/*17:00
	  17:32*/
	int i=(a[0]-48)*10*60+(a[1]-48)*60;
	int k=(a[3]-48)*10+(a[4]-48);
	int sum=i+k;
	return sum;
	
}
int main(){
	int m;
	cin>>m;
	char a[10],b[10];
	cin>>a;
	cin>>b;
	int y=sumx(b)-sumx(a);
	if(m%y==0){
		cout<<m/y;
	}else{
		cout<<m/y+1;
	}
	return 0;
}

Java :

import java.util.*;
 public class Main{
	 public static void main(String args[]){
	        Scanner sc = new Scanner(System.in);
	        String m = sc.nextLine();
	        String str = sc.nextLine().trim();
	        String str1 = sc.nextLine().trim();
	        int a = 0;int b = 0;int c = 0;int d = 0;float t = 0;
	        int e = 0;      
	        a = Integer.parseInt(str.substring(0, 2));
	        b = Integer.parseInt(str.substring(3, 5));
	        c = Integer.parseInt(str1.substring(0, 2));
	        d = Integer.parseInt(str1.substring(3, 5));
	        e = Integer.parseInt(m);
	        t = (float)e/((c-a)*60+d-b);
	        if(t%1==0){
	            System.out.println((int)t);
	        }else
	            System.out.println((int)(Math.ceil(t)));
	         
	    }
}

Python :

n=int(input())
str1=input()
str2=input()
def getTime(str_time):    #利用函数转换每行时间单位为分
   l = str_time.split(":")
   t=0
   t+=int(l[0])*60
   t+=int(l[1])
   return t
a=getTime(str2)-getTime(str1) #相减得到每天看的时间
day=n//a                      #总时间整除每天看的时间得到看的天数 除的尽正好得到天数 除不尽需再加一天
if n%a==0:
    print(day)
else:
    print(day+1)