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View Compilation Error

0_0_5448111_11427\Main.java:1: cannot find symbol
symbol  : method newBufferedInputStream(java.io.InputStream)
location: class Main
import java.util.*;import java.io.*;import java.math.BigInteger;public class Main{public static void main(String[] a){int n,i;Scanner cin=new Scanner(newBufferedInputStream(System.in));while(cin.hasNext()){BigIntegerb=BigInteger.valueOf(1);n=cin.nextInt();for(i=2;i<=n;i++){b=b.multiply(BigInteger.valueOf(i));}System.out.print(b);}}}
                                                                                                                                                      ^
0_0_5448111_11427\Main.java:1: cannot find symbol
symbol  : variable BigIntegerb
location: class Main
import java.util.*;import java.io.*;import java.math.BigInteger;public class Main{public static void main(String[] a){int n,i;Scanner cin=new Scanner(newBufferedInputStream(System.in));while(cin.hasNext()){BigIntegerb=BigInteger.valueOf(1);n=cin.nextInt();for(i=2;i<=n;i++){b=b.multiply(BigInteger.valueOf(i));}System.out.print(b);}}}
                                                                                                                                                                                                              ^
0_0_5448111_11427\Main.java:1: cannot find symbol
symbol  : variable b
location: class Main
import java.util.*;import java.io.*;import java.math.BigInteger;public class Main{public static void main(String[] a){int n,i;Scanner cin=new Scanner(newBufferedInputStream(System.in));while(cin.hasNext()){BigIntegerb=BigInteger.valueOf(1);n=cin.nextInt();for(i=2;i<=n;i++){b=b.multiply(BigInteger.valueOf(i));}System.out.print(b);}}}
                                                                                                                                                                                                                                                                                  ^
0_0_5448111_11427\Main.java:1: cannot find symbol
symbol  : variable b
location: class Main
import java.util.*;import java.io.*;import java.math.BigInteger;public class Main{public static void main(String[] a){int n,i;Scanner cin=new Scanner(newBufferedInputStream(System.in));while(cin.hasNext()){BigIntegerb=BigInteger.valueOf(1);n=cin.nextInt();for(i=2;i<=n;i++){b=b.multiply(BigInteger.valueOf(i));}System.out.print(b);}}}
                                                                                                                                                                                                                                                                                    ^
0_0_5448111_11427\Main.java:1: cannot find symbol
symbol  : variable b
location: class Main
import java.util.*;import java.io.*;import java.math.BigInteger;public class Main{public static void main(String[] a){int n,i;Scanner cin=new Scanner(newBufferedInputStream(System.in));while(cin.hasNext()){BigIntegerb=BigInteger.valueOf(1);n=cin.nextInt();for(i=2;i<=n;i++){b=b.multiply(BigInteger.valueOf(i));}System.out.print(b);}}}
                                                                                                                                                                                                                                                                                                                                        ^
5 errors


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