import java.util.*;
import java.io.*;
public class Fall2018FinalQ7 {
  
  
  public static void main(String[] args) throws Exception { 
    /*
    Scanner input = new Scanner(new File("input.txt"));
    final int MAX_SIZE = 100;
    double[] arr1 = new double[MAX_SIZE];
    double[] arr2 = new double[MAX_SIZE];
    
    int n = readData(input, arr1, arr2, MAX_SIZE);
    
    changeArray(arr1, arr2, n);
    
    sort(arr1, n);
    sort(arr2, n);
    
    for(int i=0; i<n; i++) {
      System.out.println(arr1[i] + "\t" + arr2[i]);
    }
    */
    
    String s = "";
    System.out.println(eliminateFirst2("baaababbabababababa"));
  }
  
  public static int readData(Scanner input, double[] arr1, double[] arr2,
                             int maxSize)
  {
    int count=0;
    while(count < maxSize && input.hasNextDouble()) {
      arr1[count] = input.nextDouble();
      arr2[count] = input.nextDouble();
      count++;
    }
    
    return count;
  }
  
  public static void changeArray(double[] arr1, double[] arr2, int n) {
    
    for(int i=0; i<n; i++) {
      
      arr2[i] = arr1[i] * arr2[i]; //arr2[i] *= arr1[i];
    }
  }
  
  public static void sort(double[] arr, int n) {
    for(int i=0; i<n-1; i++) {
      int minIndex = findMinIndex(arr, i, n);
      swap(arr, i, minIndex);
    }
  }
  
  public static int findMinIndex(double[] arr, int start, int end) {
    
    int minIndex = start;
    
    for(int i=start+1; i<end; i++) {
      if(arr[i] < arr[minIndex]) {
        minIndex = i;
      }
    }
    
    return minIndex;
  }
  
  public static void swap(double[] arr, int i1, int i2) {
    double temp = arr[i1];
    arr[i1] = arr[i2];
    arr[i2] = temp;
  }
    
    
  public static String eliminateFirst(String str) {
    
    String result = "";
    for(int i=0; i<str.length(); i++) {
      if(str.charAt(i)!= str.charAt(0)) {
        result = result + str.charAt(i);
      }
    }
    return result;
    
  }
  
  public static String eliminateFirst2(String str) {
    if(str.equals("")) 
         return "";
       
    String result="";
    char first = str.charAt(0);
    
    int index = str.indexOf(first);
    while(index!= -1) {
      
     String rest = str.substring(index+1);
     result+=str.substring(0, index);
     str = rest;
     index = str.indexOf(first);
    }
    
    return result+str;
     
      
    }
    
       
 }