1 int read() 2 { 3     char ch=‘ ‘; 4     int ans=0; 5     while(ch<‘0‘ || ch>‘9‘) 6         ch=getchar(); 7     while(ch<=‘9‘ && ch>=‘0‘) 8     { 9         ans=ans*10+ch-‘0‘;10         ch=getchar();11     }12     return ans;13 }

 1 template <class T> 2 bool scan_d(T &ret) 3 { 4     char c; 5     int sgn; 6     T bit=0.1; 7     if(c=getchar(), c==EOF) 8         return 0; 9     while(c!=‘-‘ && c!=‘.‘ && (c<‘0‘ || c>‘9‘))10         c=getchar();11     sgn=(c==‘-‘)? -1:1;12     ret=(c==‘-‘)? 0:(c-‘0‘);13     while(c=getchar(), c>=‘0‘ && c<=‘9‘)14         ret=ret*10+(c-‘0‘);15     if(c==‘ ‘ || c==‘\n‘)16     {17         ret*=sgn;18         return 1;19     }20     while(c=getchar(), c>=‘0‘ && c<=‘9‘)21         ret+=(c-‘0‘)*bit, bit/=10;22     ret*=sgn;23     return 1;24 }

 1 import java.util.StringTokenizer; 2 import java.io.BufferedReader; 3 import java.io.IOException; 4 import java.io.InputStreamReader; 5 import java.math.*; 6 import java.io.*; 7 import java.util.*; 8  9 class Scanner 10 {11     BufferedReader br;12     StringTokenizer st;13     public Scanner(InputStream in) 14     {15         br = new BufferedReader(new InputStreamReader(in));16         eat("");17     }18     private void eat(String s) 19     {20         st = new StringTokenizer(s);21     }22     public String nextLine()23     {24         try25         {26             return br.readLine();27         } 28         catch (IOException e) 29         {30             return null;31         }32     }33     public boolean hasNext() 34     {35         while (!st.hasMoreTokens())36         {37             String s = nextLine();38             if(s == null)39                 return false;40             eat(s);41         }42         return true;43     }44     public String next()45     {46         hasNext();47         return st.nextToken();48     }49     public int nextInt()50     {51         return Integer.parseInt(next());52     }53     long nextLong()54     {55         return Long.parseLong(next());56     }57     double nextDouble() 58     {59     return Double.parseDouble(next());60     }61 }

 1 import java.io.*; 2 import java.util.*; 3 import java.math.*; 4  5 public class Main 6 { 7     public static void main(String[] args) throws NumberFormatException, IOException 8     { 9          BufferedReader in = new BufferedReader(new InputStreamReader(System.in));10          PrintWriter out = new PrintWriter(System.out);11 12 13 14         out.close();15     }16 }

 1 import java.io.*; 2 import java.util.*; 3 import java.math.*; 4  5 public class Main 6 { 7  8     public static void main(String[] args) 9     {10         InputReader in = new InputReader();11         PrintWriter out = new PrintWriter(System.out);12         13         14         15         out.close();16     }17 }18 class InputReader19 {20     BufferedReader buf;21     StringTokenizer tok;22     InputReader()23     {24         buf = new BufferedReader(new InputStreamReader(System.in));25     }26     boolean hasNext()27     {28         while(tok == null || !tok.hasMoreElements()) 29         {30             try31             {32                 tok = new StringTokenizer(buf.readLine());33             } 34             catch(Exception e) 35             {36                 return false;37             }38         }39         return true;40     }41     String next()42     {43         if(hasNext()) return tok.nextToken();44         return null;45     }46     int nextInt()47     {48         return Integer.parseInt(next());49     }50     long nextLong()51     {52         return Long.parseLong(next());53     }54     double nextDouble()55     {56         return Double.parseDouble(next());57     }58     BigInteger nextBigInteger()59     {60         return new BigInteger(next());61     }62     BigDecimal nextBigDecimal()63     {64         return new BigDecimal(next());65     }66 }