# Youtube Supportharshu Tricks

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## HARSHAD - Devlali Numbers

Devlali numbers were an important coinage by Indian recreational mathemtician D. R. Kaprekar.

For any positive integer n, define d(n) as the sum of n and the digits of n. Eg, d(199) = 199 + 1 + 9 + 9 = 218.

For a positive number m, if there exists no positive number r such that d(r) = m, then m is a Devlali number. First few Devlali numbers are 1, 3, 5, 7, .. so on.

A prime number falling in this family is called a Devlali Prime. First few Devlali Primes are 3, 5, 7, .. so on.

### Input

First line contains integer Q

Next Q lines contain two integers A and B

### Output

print Q lines, each listing number of Devlali Primes in range [A,B] (both inclusive)

### Limits

1 <= Q <= 100000

0 <= A <= B <= 1000000

### Example

Added by: | Piyush Kumar |

Date: | 2012-09-21 |

Time limit: | 2.175s-5.438s |

Source limit: | 5000B |

Memory limit: | 1536MB |

Cluster: | Cube (Intel G860) |

Languages: | All |

## HARSHAD - Devlali Numbers

Devlali numbers were an important coinage by Indian recreational mathemtician D. R. Kaprekar.

For any positive integer n, define d(n) as the sum of n and the digits of n. Eg, d(199) = 199 + 1 + 9 + 9 = 218.

## Youtube Supportharshu Tricks Games

For a positive number m, if there exists no positive number r such that d(r) = m, then m is a Devlali number. First few Devlali numbers are 1, 3, 5, 7, .. so on.

A prime number falling in this family is called a Devlali Prime. First few Devlali Primes are 3, 5, 7, .. so on.

### Input

First line contains integer Q

Sleeping with sirens mp3 free download free. Next Q lines contain two integers A and B

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### Output

print Q lines, each listing number of Devlali Primes in range [A,B] (both inclusive)

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### Limits

1 <= Q <= 100000

0 <= A <= B <= 1000000

### Example

Added by: | Piyush Kumar |

Date: | 2012-09-21 |

Time limit: | 2.175s-5.438s |

Source limit: | 5000B |

Memory limit: | 1536MB |

Cluster: | Cube (Intel G860) |

Languages: | All |