Problem: Sometimes one has to spell email addresses over the phone. Then one usually pronounces a dot as dot, an at sign as at. As a result, we get something like vasyaatgmaildotcom. Your task is to transform it into a proper email address (vasya@gmail.com). 

It is known that a proper email address contains only such symbols as . @ and lower-case Latin letters, doesn't start with and doesn't end with a dot. Also, a proper email address doesn't start with and doesn't end with an at sign. Moreover, an email address contains exactly one such symbol as @, yet may contain any number (possible, zero) of dots. 

You have to carry out a series of replacements so that the length of the result was as short as possible and it was a proper email address. If the lengths are equal, you should print the lexicographically minimal result. 

Overall, two variants of replacement are possible: dot can be replaced by a dot, at can be replaced by an at. 

Input

The first line contains the email address description. It is guaranteed that that is a proper email address with all the dots replaced by dot an the at signs replaced by at. The line is not empty and its length does not exceed 100 symbols.

Output

Print the shortest email address, from which the given line could be made by the described above replacements. If there are several solutions to that problem, print the lexicographically minimal one (the lexicographical comparison of the lines are implemented with an operator < in modern programming languages).

In the ASCII table the symbols go in this order: . @ ab...z

Examples

Input

vasyaatgmaildotcom


Output

vasya@gmail.com


Input

dotdotdotatdotdotat


Output

dot..@..at


Input

aatt


Output

a@t

Solution (in JAVA):

Solution:
import java.awt.Point;
import java.io.*;
import java.math.BigInteger;
import java.util.*;
import static java.lang.Math.*;
 
public class Solution41C {
        
        final boolean ONLINE_JUDGE = System.getProperty("ONLINE_JUDGE")!=null;
        BufferedReader in;
        PrintWriter out;
        StringTokenizer tok = new StringTokenizer("");
        
        void init() throws FileNotFoundException{
                if (ONLINE_JUDGE){
                        in = new BufferedReader(new InputStreamReader(System.in));
                        out = new PrintWriter(System.out);
                }else{
                        in = new BufferedReader(new FileReader("input.txt"));
                        out = new PrintWriter("output.txt");
                }
        }
        
        String readString() throws IOException{
                while(!tok.hasMoreTokens()){
                        tok = new StringTokenizer(in.readLine());
                }
                return tok.nextToken();
        }
        
        int readInt() throws IOException{
                return Integer.parseInt(readString());
        }
        
        long readLong() throws IOException{
                return Long.parseLong(readString());
        }
        
        double readDouble() throws IOException{
                return Double.parseDouble(readString());
        }
        
        public static void main(String[] args){
                new Solution41C().run();
        }
        
        public void run(){
                try{
                        long t1 = System.currentTimeMillis();
                        init();
                        solve();
                        out.close();
                        long t2 = System.currentTimeMillis();
                        System.err.println("Time = "+(t2-t1));
                }catch (Exception e){
                        e.printStackTrace(System.err);
                        System.exit(-1);
                }
        }
        
        static class Utils {
 
                private Utils() {}
 
                public static void mergeSort(int[] a) {
                        mergeSort(a, 0, a.length - 1);
                }
 
                private static void mergeSort(int[] a, int leftIndex, int rightIndex) {
                        final int MAGIC_VALUE = 50;
                        if (leftIndex < rightIndex) {
                                if (rightIndex - leftIndex <= MAGIC_VALUE) {
                                        insertionSort(a, leftIndex, rightIndex);
                                } else {
                                        int middleIndex = (leftIndex + rightIndex) / 2;
                                        mergeSort(a, leftIndex, middleIndex);
                                        mergeSort(a, middleIndex + 1, rightIndex);
                                        merge(a, leftIndex, middleIndex, rightIndex);
                                }
                        }
                }
 
                private static void merge(int[] a, int leftIndex, int middleIndex, int rightIndex) {
                        int length1 = middleIndex - leftIndex + 1;
                        int length2 = rightIndex - middleIndex;
                        int[] leftArray = new int[length1];
                        int[] rightArray = new int[length2];
                        System.arraycopy(a, leftIndex, leftArray, 0, length1);
                        System.arraycopy(a, middleIndex + 1, rightArray, 0, length2);
                        for (int k = leftIndex, i = 0, j = 0; k <= rightIndex; k++) {
                                if (i == length1) {
                                        a[k] = rightArray[j++];
                                } else if (j == length2) {
                                        a[k] = leftArray[i++];
                                } else {
                                        a[k] = leftArray[i] <= rightArray[j] ? leftArray[i++] : rightArray[j++];
                                }
                        }
                }
 
                private static void insertionSort(int[] a, int leftIndex, int rightIndex) {
                        for (int i = leftIndex + 1; i <= rightIndex; i++) {
                                int current = a[i];
                                int j = i - 1;
                                while (j >= leftIndex && a[j] > current) {
                                        a[j + 1] = a[j];
                                        j--;
                                }
                                a[j + 1] = current;
                        }
                } 
        }
        
        void solve() throws IOException{
        	String s = readString();
        	int firstDot = s.indexOf("dot");
        	if(firstDot != 0){
        		s = s.replaceAll("dot", ".");
        	}
        	else{
        		s = s.replaceAll("dot", ".");
        		s = "dot" + s.substring(1);
        	}
        	if(s.charAt(s.length()-1) == '.')
        		s = s.substring(0, s.length()-1)+"dot";
        	if(s.indexOf("at") != 0){
        		s = s.replaceFirst("at", "@");
        	}
        	else{
        		String y = s.substring(2);
        		y = y.replaceFirst("at", "@");
        		s = "at"+y;
        	}
        	out.println(s);
        }
        
        static double distance(long x1, long y1, long x2, long y2){
        	return Math.sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
        }
        
        static long gcd(long a, long b){
        	while(a != b){
        		if(a < b) a -=b;
        		else b -= a;
        	}
        	return a;
        }
        
        static long lcm(long a, long b){
        	return a * b /gcd(a, b);
        }
}