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  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5. int r,s,x,z,v,res=0;
  6. for (r = 1; r < 10; r++)
  7. for (z = 1; z < 10; z++)
  8. for (s = 1; s < 10; s++)
  9. for (x = 0; x < 10; x++)
  10. for (v = 0; v < 10; v++)
  11. res += (((1000*r + 100*s + 10*r + x) + (100*z + 10*v +v))
  12. == (1000*s + 100*r + 10*x + s));
  13. printf("%d", res);
  14. return 0;
  15. }
  16.  
Success #stdin #stdout 0s 9432KB
stdin
Standard input is empty
stdout
3