| # 1398_A. Bad Triangle |
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| ## Problem Description |
| You are given an array a_1, a_2, ... , a_n, which is sorted in non-decreasing order (a_i ≤ a_{i + 1}). |
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| Find three indices i, j, k such that 1 ≤ i < j < k ≤ n and it is impossible to construct a non-degenerate triangle (a triangle with nonzero area) having sides equal to a_i, a_j and a_k (for example it is possible to construct a non-degenerate triangle with sides 3, 4 and 5 but impossible with sides 3, 4 and 7). If it is impossible to find such triple, report it. |
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| Input |
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| The first line contains one integer t (1 ≤ t ≤ 1000) — the number of test cases. |
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| The first line of each test case contains one integer n (3 ≤ n ≤ 5 ⋅ 10^4) — the length of the array a. |
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| The second line of each test case contains n integers a_1, a_2, ... , a_n (1 ≤ a_i ≤ 10^9; a_{i - 1} ≤ a_i) — the array a. |
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| It is guaranteed that the sum of n over all test cases does not exceed 10^5. |
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| Output |
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| For each test case print the answer to it in one line. |
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| If there is a triple of indices i, j, k (i < j < k) such that it is impossible to construct a non-degenerate triangle having sides equal to a_i, a_j and a_k, print that three indices in ascending order. If there are multiple answers, print any of them. |
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| Otherwise, print -1. |
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| Example |
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| Input |
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| 3 |
| 7 |
| 4 6 11 11 15 18 20 |
| 4 |
| 10 10 10 11 |
| 3 |
| 1 1 1000000000 |
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| Output |
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| 2 3 6 |
| -1 |
| 1 2 3 |
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| Note |
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| In the first test case it is impossible with sides 6, 11 and 18. Note, that this is not the only correct answer. |
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| In the second test case you always can construct a non-degenerate triangle. |
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| ## Contest Information |
| - **Contest ID**: 1398 |
| - **Problem Index**: A |
| - **Points**: 0.0 |
| - **Rating**: 800 |
| - **Tags**: geometry, math |
| - **Time Limit**: {'seconds': 1, 'nanos': 0} seconds |
| - **Memory Limit**: 256000000 bytes |
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| ## Task |
| Solve this competitive programming problem. Provide a complete solution that handles all the given constraints and edge cases. |