fileio buffered for fast

templates/java/BufferedIO.java

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+import java.util.*;
+import java.io.*;
+import java.math.*;
+
+public class BufferedIO {
+
+  static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+  static PrintWriter pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
+  static StringTokenizer st;
+
+  public static void main(String[] args) throws IOException {
+
+    // Write code here:
+
+    int a = nextInt();
+    print("You inputted: " + a);
+
+    // Flush
+
+    pw.flush();
+  }
+
+  // Helper IO functions
+
+  static String next() throws IOException {
+    while (st == null || !st.hasMoreTokens())
+      st = new StringTokenizer(br.readLine());
+    return st.nextToken();
+  }
+
+  static int nextInt() throws IOException {
+    return Integer.parseInt(next());
+  }
+
+  static long nextLong() throws IOException {
+    return Long.parseLong(next());
+  }
+
+  static double nextDouble() throws IOException {
+    return Double.parseDouble(next());
+  }
+
+  static String nextLine() throws IOException {
+    return br.readLine();
+  }
+
+  static int[] readIntArray(int n) throws IOException {
+    int[] a = new int[n];
+    for (int i = 0; i < n; i++)
+      a[i] = nextInt();
+    return a;
+  }
+
+  static long[] readLongArray(int n) throws IOException {
+    long[] a = new long[n];
+    for (int i = 0; i < n; i++)
+      a[i] = nextLong();
+    return a;
+  }
+
+  static void println(Object o) {
+    pw.println(o);
+  }
+
+  static void print(Object o) {
+    pw.print(o);
+  }
+
+  static void printf(String fmt, Object... args) {
+    pw.printf(fmt, args);
+  }
+}

templates/java/FileIOBuffered.java

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+import java.util.*;
+import java.io.*;
+import java.math.*;
+
+public class FileIOBuffered {
+
+  static final String INPUT_FILE = "problem.in"; // ← change to problem name
+  static final String OUTPUT_FILE = "problem.out"; // ← change to problem name
+
+  static BufferedReader br;
+  static PrintWriter pw;
+  static StringTokenizer st;
+
+  public static void main(String[] args) throws IOException {
+    br = new BufferedReader(new FileReader(INPUT_FILE));
+    pw = new PrintWriter(new BufferedWriter(new FileWriter(OUTPUT_FILE)));
+
+    // Write code here
+    int t = nextInt();
+    print(t);
+
+    pw.flush();
+    pw.close();
+  }
+
+  // Helper Functions
+
+  static String next() throws IOException {
+    while (st == null || !st.hasMoreTokens())
+      st = new StringTokenizer(br.readLine());
+    return st.nextToken();
+  }
+
+  static int nextInt() throws IOException {
+    return Integer.parseInt(next());
+  }
+
+  static long nextLong() throws IOException {
+    return Long.parseLong(next());
+  }
+
+  static double nextDouble() throws IOException {
+    return Double.parseDouble(next());
+  }
+
+  static String nextLine() throws IOException {
+    return br.readLine();
+  }
+
+  static int[] readIntArray(int n) throws IOException {
+    int[] a = new int[n];
+    for (int i = 0; i < n; i++)
+      a[i] = nextInt();
+    return a;
+  }
+
+  static long[] readLongArray(int n) throws IOException {
+    long[] a = new long[n];
+    for (int i = 0; i < n; i++)
+      a[i] = nextLong();
+    return a;
+  }
+
+  static void println(Object o) {
+    pw.println(o);
+  }
+
+  static void print(Object o) {
+    pw.print(o);
+  }
+
+  static void printf(String fmt, Object... args) {
+    pw.printf(fmt, args);
+  }
+}

templates/java/FileIOSimple.java

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+import java.util.*;
+import java.io.*;
+import java.math.*;
+
+public class FileIOSimple {
+  static final String INPUT_FILE = "problem.in";
+  static final String OUTPUT_FILE = "problem.out";
+
+  static Scanner sc;
+
+  public static void main(String[] args) throws IOException {
+    sc = new Scanner(new File(INPUT_FILE));
+    System.setOut(new PrintStream(new File(OUTPUT_FILE)));
+
+    // Write code here
+
+    int a = sc.nextInt();
+    System.out.println(a);
+
+  }
+}

templates/java/ScannerSout.java

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+// General imports
+
+import java.util.*;
+import java.io.*;
+import java.math.*;
+
+public class ScannerSout {
+  public static void main(String[] args) {
+
+    Scanner sc = new Scanner(System.in);
+
+    // Write code here
+
+    int a = sc.nextInt();
+    System.out.println(a);
+
+    sc.close();
+
+  }
+}