public static void readIntMatrix(InputReader in, int[][] matrix) {
for (int i = 0; i < matrix.length; i++) {
for (int j = 0; j < matrix[i].length; j++) {
matrix[i][j] = in.nextInt();
}
}
}
public static void readIntArrays(InputReader in, int[]... arrays) {
for (int i = 0; i < arrays[0].length; i++) {
for (int j = 0; j < arrays.length; j++) {
arrays[j][i] = in.nextInt();
}
}
}
public static void readCharMatrix(InputReader in, char[][] matrix) {
for (int i = 0; i < matrix.length; i++) {
String row = in.next();
for (int j = 0; j < matrix[i].length; j++) {
matrix[i][j] = row.charAt(j);
}
}
}