#include <bits/stdc++.h>
using namespace std;
int main()
{
 	string a;
 	cin >> a;
 	int sum=0;
 	if(a[0]>'1')
 	{
 		sum++;
	}
	if(a[0]=='1' && a[1]>'2')
	{
		sum++;
	}
	if(a[0]=='0' && a[1]=='0')
	{
		sum++;
	}
	if(a[3]>'3')
	{
		sum++;
	}
	if(a[3]=='3' && a[4]>'1')
	{
		sum++;
	}
	if((a[0]-'0'*10+a[1]-'0'==1 || a[0]-'0'*10+a[1]-'0'==4 || a[0]-'0'*10+a[1]-'0'==6 || a[0]-'0'*10+a[1]-'0'==9 || a[0]-'0'*10+a[1]-'0'==11) && a[3]-'0'*10+a[4]-'0'>30)
	{
		sum++;
	}
	if(a[0]-'0'*10+a[1]-'0'==2 && a[3]-'0'*10+a[4]-'0'>=30)
	{
		sum+=2;
	}
	if(a[0]-'0'*10+a[1]-'0'==2 && a[3]-'0'*10+a[4]-'0'>28)
	{
		sum++;
	}
	if(a[3]=='0' && a[4]=='0')
	{
		sum++;
	}
	cout << sum;
 	return 0;
}