import java.util.Scanner;
public class MatrixMult {
    public static void main(String[] args) {
        double [][] A, B, C;
        Scanner getInput = new Scanner(System.in);
        // Get the sizes
        System.out.println("Input n, m, p to multiply nxp and pxm matrices");
        int n = getInput.nextInt();
        int m = getInput.nextInt();
        int p = getInput.nextInt();
        // Create the matrices
        A = new double[n][m];
        B = new double[n][p];
        C = new double[p][m];
        // Input the matrices
        System.out.printf("Input %d doubles for the %dx%d matrix B\n", n*p,n,p);
        for (int i=0; i<n; i++)
            for (int j=0; j<p; j++)
                B[i][j] = getInput.nextDouble();
        System.out.printf("Input %d doubles for the %dx%d matrix C\n", p*m,p,m);
        for (int i=0; i<p; i++)
            for (int j=0; j<m; j++)
                C[i][j] = getInput.nextDouble();
        // Do the multiplication
        matMult(n,m,p, A,B,C);
        // print the results
        System.out.printf("The resulting %dx%d matrix is\n", n,m);
        for (int i=0; i<n; i++) {
            for (int j=0; j<m; j++)
                System.out.printf("%5.1f ", A[i][j]);
            System.out.println();
        }
    }
    public static void matMult(int n, int m, int p,
                               double [][] A, double [][] B, double [][] C) {
        for (int i=0; i<n; i++)
            for (int j=0; j<m; j++) {
                A[i][j] = 0;
                for (int k=0; k<p; k++)
                    A[i][j] += B[i][k]*C[k][j];
            }
    }    
}