**Compilation/Execution Result:**

Given an array of positive numbers, find the maximum sum of a subsequence with the constraint that no 2 numbers in the sequence should be adjacent in the array. So 3 2 7 10 should return 13 (sum of 3 and 10) or 3 2 5 10 7 should return 15 (sum of 3, 5 and 7).

**Input:**

The first line of input contains an integer T denoting the number of test cases.

The first line of each test case is N,N is the size of array.

The second line of each test case contains N input C[i].

**Output:**

Print the maximum sum of a subsequence.

**Constraints:**

1 ≤ T ≤ 80

1 ≤ N ≤ 100

1 ≤ C[i] ≤ 500

**Example:**

**Input:**

2

6

5 5 10 100 10 5

4

3 2 7 10

**Output:**

110

13

surbhi_7 | 128 |

Rajat Thakur 2 | 115 |

John Carey | 92 |

shaktiman_shaktiman_shaktiman | 91 |

nancygarg258_pec | 90 |

Ibrahim Nash | 604 |

ashrepos | 490 |

RealHorror | 368 |

shaktiman_shaktiman_shaktiman | 363 |

shi143din | 343 |

akhayrutdinov | 4052 |

sanjay05 | 3406 |

Quandray | 2435 |

Michael Riegger | 2228 |

Jasleen Kaur 2 | 2012 |