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Jan 19th, 2019
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  1. #include<stdio.h>
  2. int main() {
  3. int n;
  4. scanf("%d",&n);
  5. float a[n][n];
  6. float x,y;
  7. int i,j;
  8. for(i=0; i<n; i++)
  9. for(j=0; j<n; j++)
  10. scanf("%f", &a[i][j]);
  11. for(i=0; i<n; i++) {
  12. for (j=0; j<n; j++) {
  13. if(i>j)
  14. x+=a[i][j];
  15. if(i+j>n-1)
  16. y+=a[i][j];
  17.  
  18. }
  19. }
  20. float b[n][n];
  21. for(i=0; i<n; i++) {
  22. for (j=0; j<n; j++) {
  23. if(i==j&&i+j==n-1)
  24. b[i][j]=x+y;
  25. else if(i==j)
  26. b[i][j]=x;
  27. else if(i+j==n-1)
  28. b[i][j]=y;
  29. else
  30. b[i][j]=0;
  31. }
  32. }
  33. for(i=0; i<n; i++)
  34. { for(j=0; j<n; j++)
  35. {printf("%.1f ", b[i][j]);}
  36. printf("\n");
  37. }
  38. return 0;
  39. }
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