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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a[30],i;
  5. a[0]=2; a[1]=-1;
  6. for(i=2;i<30;i++)
  7. a[i]=-a[i-1]+a[i-2]+2;
  8.  
  9. printf("%d ", a[i]);
  10. printf("\n");
  11.  
  12. return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5472KB
stdin
Standard input is empty
stdout
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