import java.util.*;
import java.lang.*;
class Main
{
{
Scanner tek
=new Scanner
(System.
in); float a
=Float.
parseFloat(tab
[0]); float b
=Float.
parseFloat(tab
[1]); float c
=Float.
parseFloat(tab
[2]); if(a==0 && c-b==0)
{
}
else if(a==0 & c-b!=0)
{
} else if(a!=0 && c-b==0)
{
} else if(a!=0 && c-b!=0)
{
float x=(c-b)/a;
x=x/100;
}
}
}
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