# Poj Solution 2565

```http://poj.org/problem?id=2565

//* @author  mekarlos@gmail.com
import java.io.IOException;
import java.util.Scanner;
import java.util.StringTokenizer;
public class Main {
public static void main(String[] args) throws IOException{
// TODO Auto-generated method stub
Scanner scan=new Scanner(System.in);
StringTokenizer tokens;
tokens=new StringTokenizer(scan.nextLine());
int n=new Integer(tokens.nextToken());
double d=new Double(tokens.nextToken());
double result;
int num;
String a="";
int h,m,s;
int i1,i2;
int aux;
while(scan.hasNext()){
h=0;
m=0;
s=0;
tokens=new StringTokenizer(scan.nextLine());
num=new Integer(tokens.nextToken());
for(int i=0;i< n;i++){
a=tokens.nextToken();
if(a.lastIndexOf('-')>=0) {
h=-1;
break;
}
i1=a.indexOf(':');
i2=a.lastIndexOf(':');
aux=new Integer(a.substring(0, i1));
h+=aux;
aux=new Integer(a.substring(i1+1,i2));
m+=aux;
s+=new Integer(a.substring(i2+1,a.length()));
}
if(h==-1) {
a=num+"";
for(int j=0;j< 3-a.length();j++) System.out.print(" ");
System.out.print(num+": -n");
}
else{
result=h*3600+m*60+s;
result=result/(d*60);
m=(int)Math.floor(result);
result=result-m;
result*=60;
s=(int)Math.round(result);
if(s==60){
s=0;
m++;
}
a=num+"";
for(int j=0;j< 3-a.length();j++) System.out.print(" ");
a="";
if(s< 10)a="0";
System.out.print(num+": "+m+":"+a+s+" min/kmn");
}
}
}
}

```
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