## DCEPC705 - Weird Points

Given N distinct points in a plane, a point (x1, y1) is said to be dominating another point (x2, y2) if x1>=x2 and y1>=y2.

The Dominance of a point is the absolute difference between 2 quantities – no. of points dominated by this point and no. of points not dominated by this point. **(excluding itself)**

A Weird point is the point whose Dominance value is greater than or equal to a threshold value ‘k’. Find the no. of such Weird Points among those N given points.

### Input

First line gives T, the no. of test cases.

Each test case consists of 2 integers in first line, N and K, as specified above.

Next N lines give the coordinates of N points in the plane. “Xi” and “Yi” are space separated.

### Output

Output T lines, each containing the required answer.

### Constraints

1<=T<=10

1<=N<=10^5

1<=Xi, Yi<=10^9

0<=K<=N

### Example

Input:

1

4 2

3 1

7 5

2 8

6 7

Output:

2

**Problem Statement and Test Cases has been updated 2012-05-17 18:10:00**.

Added by: | dce coders |

Date: | 2012-04-30 |

Time limit: | 0.430s |

Source limit: | 50000B |

Memory limit: | 1536MB |

Cluster: | Cube (Intel G860) |

Languages: | ASM32-GCC MAWK BC C-CLANG C C++ 4.3.2 CPP CPP14 CPP14-CLANG COBOL COFFEE D-CLANG D-DMD DART ELIXIR FANTOM FORTH GOSU GRV JAVA JS-MONKEY KTLN NIM NODEJS OBJC OBJC-CLANG OCT PICO PROLOG PYPY PY_NBC R RACKET RUST CHICKEN SQLITE SWIFT UNLAMBDA VB.NET |

Resource: | Own Problem |