CF1862D.Ice Cream Balls

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题目描述

Tema decided to improve his ice cream making skills. He has already learned how to make ice cream in a cone using exactly two balls.

Before his ice cream obsession, Tema was interested in mathematics. Therefore, he is curious about the minimum number of balls he needs to have in order to make exactly nn different types of ice cream.

There are plenty possible ice cream flavours: 1,2,3,1, 2, 3, \dots . Tema can make two-balls ice cream with any flavours (probably the same).

Two ice creams are considered different if their sets of ball flavours are different. For example, {1,2}={2,1}\{1, 2\} = \{2, 1\} , but {1,1}{1,2}\{1, 1\} \neq \{1, 2\} .

For example, having the following ice cream balls: {1,1,2}\{1, 1, 2\} , Tema can make only two types of ice cream: {1,1}\{1, 1\} and {1,2}\{1, 2\} .

Note, that Tema do not need to make all the ice cream cones at the same time. This means that he making ice cream cones independently. Also in order to make a following cone {x,x}\{x, x\} for some xx , Tema needs at least 22 balls of type xx .

Help Tema answer this question. It can be shown that answer always exist.

输入格式

Each test consists of multiple test cases. The first line of input contains a single integer tt ( 1t1041 \le t \le 10^4 ) — the number of test cases. Then follows the description of the test cases.

The first line of each test case contains a single integer nn ( 1n10181 \le n \le 10^{18} ) — the number of ice cream types that Tema wants to make.

输出格式

For each test case, output a single integer — the minimum number of balls Tema needs to buy.

输入输出样例

  • 输入#1

    5
    1
    3
    6
    179
    1000000000000000000

    输出#1

    2
    3
    4
    27
    2648956421

说明/提示

In the first sample, it is enough to have following balls types: {1,1}\{1, 1\} . Note, that set {1}\{1\} if not enough since we need at least 22 balls of a type 11 in order to make such cone {1,1}\{1, 1\} .

In the second sample, it is not possible to make it with 22 balls, but it can be done with these balls: {1,2,3}\{1, 2, 3\} .

In the third sample, {1,2,3,4}\{1, 2, 3, 4\} is optimal answer, so we can get following ice cream cones: {1,2}\{1, 2\} , {1,3}\{1, 3\} , {1,4}\{1, 4\} , {2,3}\{2, 3\} , {2,4}\{2, 4\} , {3,4}\{3, 4\} .

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