1 import java.util.*; 2 import java.io.*; 3  4 class FastReader{ 5     BufferedReader reader; 6     StringTokenizer tokenizer; 7      8     public FastReader(InputStream stream){ 9         reader = new BufferedReader(new InputStreamReader(stream), 1 << 22);10         tokenizer = null;11     }12     13     public String next(){14         while (tokenizer == null || !tokenizer.hasMoreTokens()){15             try { 16                 tokenizer = new StringTokenizer(reader.readLine());17             } catch (Exception e){18                 //System.out.println(-1);19                 throw new RuntimeException(e);20             }21         }22         23         return tokenizer.nextToken();24     }25     26     public int next_int(){27         return Integer.parseInt(next());28     }29     30     public float next_float(){31         return Float.parseFloat(next());32     }33 }34 35 public class Main {36     public static void main(String[] args){37         FastReader reader = new FastReader(System.in);38         String input = reader.next();39         40         int num_sig = (input.charAt(0) == ‘+‘) ? 1 : -1;41         String int_part = input.substring(1, 2);42         43         String dec_part;44         int cur_idx = 3;45         while (Character.isDigit(input.charAt(cur_idx)))46             cur_idx++;47         48         dec_part = input.substring(3, cur_idx);49         50         cur_idx++;51         int exp_num = Integer.parseInt(input.substring(cur_idx));52         53         54         int dec_part_cnt = dec_part.length();55         56         StringBuilder res_sb = new StringBuilder();57         58         if (exp_num < 0){59             exp_num = -exp_num;60             61             if (num_sig == -1)62                 res_sb.append(‘-‘);63             64             res_sb.append("0.");65             exp_num--;66             while (exp_num != 0){67                 res_sb.append(‘0‘);68                 exp_num--;69             }70             71             res_sb.append(int_part);72             res_sb.append(dec_part);73         } else {74             if (num_sig == -1)75                 res_sb.append(‘-‘);76             77             if (exp_num >= dec_part_cnt){78                 res_sb.append(int_part);79                 res_sb.append(dec_part);80                 81                 int zero_cnt = exp_num - dec_part_cnt;82                 for (int i = 0; i < zero_cnt; i++)83                     res_sb.append(‘0‘);84             } else {85                 res_sb.append(int_part);86                 res_sb.append(dec_part.substring(0, exp_num));87                 res_sb.append(‘.‘);88                 res_sb.append(dec_part.substring(exp_num));89             }90         }91         92         System.out.println(res_sb.toString());93     }94 }