/*
#include<stdio.h>
int main()
{
int a,i,max = -1000000,min = 1000000;
for (i=1;i<=5;i++)
{
scanf("%d",&a);
if (max < a)
{
max = a;
}
else if(min > a)
{
min = a;
}
}
printf("%d\n%d",max,min);
}
#include<stdio.h>
int main()
{
int n,a,i,d=0;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%d",&a);
if(a%5==0)
{
d = a+d;
}
}
printf("%d",d);
}
#include<stdio.h>
int main()
{
int a,i = 0,d = 0;
scanf("%d",&a);
while(1)
{
i++;
if(d >= a)
{
printf("%d",i-1);
break;
}
else
{
d = i + d;
}
}
}
#include<stdio.h>
int main()
{
int n,i,d = 0,sum = 0;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
d++;
sum = d + sum;
}
printf("%d",sum);
}
*/
#include<stdio.h>
int main()
{
double s,e,a = 0,sum = 0;
int m=0;
for(int i=1;i<=5;i++)
{
scanf("%lf %lf",&s,&e);
a = s - e;
if (a - 1 > 4)
{
a = 4;
sum = a + a;
}
else
{
a = a-1;
sum = a + a;
}
for(int j=1;j<=sum;j++)
{
sum-0.5;
m = +5000;
}
if(sum<=5)
{
m+5/100;
}
else if(sum>=15)
{
m-5/100;
}
}
printf("%d",m);
}