#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d,e,f,g,h;
	char ch;
	cin>>a>>ch>>b>>ch>>c>>ch>>d>>e>>ch>>f>>ch>>g>>ch>>h;
	cout<<(long long)((e-a)*360000+(f-a)*6000+(g-c)*100+h-d);
	return 0;
}