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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Trimat {
  6. 	int Size;
  7. 	int[][] M;
  8.  
  9. 	public Trimat(int n, Scanner in) {
  10. 		Size = n;
  11. 		M = new int[Size][];
  12. 		for (int k = 0; k < Size; k++) {
  13. 			M[k] = new int[Size - k];
  14. 			for (int j = 0; j < Size - k; j++)
  15. 				M[k][j] = in.nextInt();
  16. 		}
  17. 	}
  18.  
  19. 	public Trimat(int n, int a) {
  20. 		Size = n;
  21. 		M = new int[Size][];
  22. 		for (int k = 0; k < Size; k++) {
  23. 			M[k] = new int[Size - k];
  24. 			M[k][0] = a;
  25. 		}
  26. 	}
  27.  
  28. 	public void print() {
  29. 		for (int k = 0; k < Size; k++) {
  30. 			for (int j = 0; j < k; j++)
  31. 				System.out.print("\t");
  32. 			for (int j = 0; j < Size - k; j++)
  33. 				System.out.format("%d\t", M[k][j]);
  34. 			System.out.println();
  35. 		}
  36. 	}
  37.  
  38. 	public Trimat add(Trimat B) {
  39. 		Trimat C = new Trimat(Size, 0);
  40. 		for (int k = 0; k < Size; k++)
  41. 			for (int j = 0; j < Size - k; j++)
  42. 				C.M[k][j] = M[k][j] + B.M[k][j];
  43. 		return C;
  44. 	}
  45.  
  46. 	public Trimat mul(Trimat B) {
  47. 		Trimat C = new Trimat(Size, 0);
  48. 		for (int k = 0; k < Size; k++) 
  49. 			for (int j = k; j < Size; j++)
  50. 				for (int r = k; r <= j; r++)
  51. 					C.M[k][j-k] += M[k][r-k] * B.M[r][j-r];
  52. 		return C;
  53. 	}
  54. }
  55.  
  56. class Main
  57. {
  58. 	public static void main (String[] args) throws java.lang.Exception
  59. 	{
  60. 		Scanner in = new Scanner(System.in);
  61. 		int n = in.nextInt();
  62.  
  63. 		Trimat A = new Trimat(n, in), B = new Trimat(n, in);
  64. 		Trimat I = new Trimat(n,1);
  65. 		Trimat C = A.mul(I.add(B.mul(B)));
  66. 		A.print();
  67. 		B.print();
  68. 		C.print();
  69. 	}
  70. }
Success #stdin #stdout 0.15s 321280KB
comments (?)
stdin
copy 
3
2 2 2
0 3
1
1 2 3
   4 5
      6
stdout
copy 
2	2	2	
	0	3	
		1	
1	2	3	
	4	5	
		6	
4	54	236	
	0	111	
		37
https://ideone.com/Q0zdqI
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
secret

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