#include<bits/stdc++.h>
using namespace std;
struct TIME
{
	int Year;
	int Mouth;
	int Day;
	int Hour;
	long long Minute;
};
class TOOL
{
	public:
		int JUDGE_LEAP_YEAR(int year)
		{
			if(year%4==0&&year%100!=0||year%400==0)return 1;
			return 0;
		}
		int DAYS_IN_A_MOUTH(int mouth,int year)
		{
			if(mouth==1||mouth==3||mouth==5||mouth==7||mouth==8||mouth==10||mouth==12)return 31;
			if(mouth==4||mouth==6||mouth==9||mouth==11)return 30;
			if(mouth==2)return 28+JUDGE_LEAP_YEAR(year);
		}
		int THE_UNIFIED_UNIT_IS_MINUTES(TIME time)
		{
			time.Minute+=time.Hour*60+time.Day*1440;
			for(int i=1;i<time.Mouth;i++)time.Minute+=DAYS_IN_A_MOUTH(i,time.Year)*1440;
			for(int i=0;i<time.Year;i++)time.Minute+=(356+JUDGE_LEAP_YEAR(i))*1440;
			return time.Minute;
		}
};
int CMP(int num1,int num2)
{
	return num2>num1;
}
int main()
{
	int n;
	cin>>n;
	TOOL tool;
	int Problem[5005]={0};
	for(int i=1;i<=n;i++)cin>>Problem[i];
	TIME Start,End;
	string str;
	cin>>str;
	int temp=0,numT=1;
	for(int i=0;i<str.size();i++)
	{
		if(str[i]>='0'&&str[i]<='9')temp=temp*10+(str[i]-'0');
		else
		{
			switch(numT)
			{
				case 1:Start.Year=temp;
				case 2:Start.Mouth=temp;
				case 3:Start.Day=temp;
				case 4:Start.Hour=temp;
				case 5:Start.Minute=temp;
			}
			temp=0;
			numT++;
		}
	}
	Start.Minute=temp;
	temp=0;
	numT=1;
	cin>>str;
	for(int i=0;i<str.size();i++)
	{
		if(str[i]>='0'&&str[i]<='9')temp=temp*10+(str[i]-'0');
		else
		{
			switch(numT)
			{
				case 1:End.Year=temp;break;
				case 2:End.Mouth=temp;break;
				case 3:End.Day=temp;break;
				case 4:End.Hour=temp;break;
				case 5:End.Minute=temp;break;
			}
			temp=0;
			numT++;
		}
	}
	End.Minute=temp;
	sort(Problem+1,Problem+1+n,CMP);
	int equal=tool.THE_UNIFIED_UNIT_IS_MINUTES(End)-tool.THE_UNIFIED_UNIT_IS_MINUTES(Start);
	int sum=0;
	while(equal>=Problem[sum+1])
	{
		if(sum>=n)break;
		equal-=Problem[sum+1];
		sum++;
	}
	cout<<sum;
	return 0;
}