Notes

{
public static void main(String[] args) throws IOException {
InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
BufferedReader in = new BufferedReader(reader);
String line;
//while ((line = in.readLine()) != null) {
//System.out.println(line);
//}
String line1 = in.readLine();
String src = in.readLine();
String des = in.readLine();
int n= line1.length();
List<String> source = new ArrayList<>();
List<String> dest = new ArrayList<>();
List<Double> rate = new ArrayList<>();
String[] items1 = line1.split(";");
for(int i =0;i<items1.length;i++)
{
String inputlist[]=items1[i].split(",");
source.add(inputlist[0]);
dest.add(inputlist[1]);
rate.add(Double.parseDouble(inputlist[2]));
}
for(int i =0;i<source.size();i++)
{
System.out.println(source.get(i)+" "+dest.get(i)+" "+rate.get(i));
}

// source.add("U");
// source.add("U");
// source.add("G");
// source.add("C");
// source.add("C");
// dest.add("G");
// dest.add("J");
// dest.add("J");
// dest.add("C");
// dest.add("K");
// rate.add(0.7);
// rate.add(109.0);
// rate.add(155.0);
// rate.add(5.27);
// rate.add(921.0);
double result = calculate(source, dest, rate,src,des);
System.out.println(result);
}

public static double calculate(List source, List dest, List rate, String src, String des){
double val = 1;
double maxval = 0;
String olddest = des;

for(int i = 0; i < dest.size(); i++){
System.out.println(dest.get(i)+" "+source.get(i));

if (dest.get(i).equals(des) && source.get(i).equals(src)){
System.out.println("Both are equal");
System.out.println("Curr Target: " + dest.get(i) + " Destination: " + des + " Curr Src: " + source.get(i) + " Source: " + src );
if (!(dest.get(i).equals(olddest))){
val = val * (double) rate.get(i);
maxval = Math.max(maxval, val);
}
else if(dest.get(i).equals(olddest)) {
maxval = Math.max(maxval, (double) rate.get(i));
}
} else if (dest.get(i).equals(des) && !source.get(i).equals(src)) {
System.out.println("First equal and second not equal");
System.out.println("Curr Target: " + dest.get(i) + " Destination: " + des + " Curr Src: " + source.get(i) + " Source: " + src );
val = val * (double) rate.get(i);
des = (String) source.get(i);
i = -1;
}
else if(!(dest.contains(olddest)))
{
maxval = -1.0;
}
}
return maxval;
}
}