C. The Legend of Freya the Frog

time limit per test

2 seconds

memory limit per test

256 megabytes

Freya the Frog is traveling on the 2D coordinate plane. She is currently at point (0,0)(0,0) and wants to go to point (x,y)(x,y). In one move, she chooses an integer dd such that 0≤d≤k0≤d≤k and jumps dd spots forward in the direction she is facing.

Initially, she is facing the positive xx direction. After every move, she will alternate between facing the positive xx direction and the positive yy direction (i.e., she will face the positive yy direction on her second move, the positive xx direction on her third move, and so on).

What is the minimum amount of moves she must perform to land on point (x,y)(x,y)?

Input

The first line contains an integer tt (1≤t≤1041≤t≤104) --- the number of test cases.

Each test case contains three integers xx, yy, and kk (0≤x,y≤109,1≤k≤1090≤x,y≤109,1≤k≤109).

Output

For each test case, output the number of jumps Freya needs to make on a new line.

Example

Input

Copy

复制代码

3

9 11 3

0 10 8

1000000 100000 10

Output

Copy

复制代码
8
4
199999

Note

In the first sample, one optimal set of moves is if Freya jumps in the following way: (0,00,0) →→ (2,02,0) →→ (2,22,2) →→ (3,23,2) →→ (3,53,5) →→ (6,56,5) →→ (6,86,8) →→ (9,89,8) →→ (9,119,11). This takes 8 jumps.

解题说明:此题是一道数学题,交替向上向右走,可以不走,请问到给定点需要走几次。由于可以走0步,所以向上走和向右走是相互独立的,只需要求出他们的最大值即可。注意走0步的移动也要统计在内。

cpp 复制代码
#include <iostream>
#include<algorithm>
using namespace std;

void solve()
{
	long long x, y, k;
	cin >> x >> y >> k;
	long long ansx = x / k + (x % k != 0), ansy = y / k + (y % k != 0);
	if (ansx > ansy)
	{
		cout << 2ll * ansx - 1 << endl;
	}
	else
	{
		cout << 2ll * ansy << endl;
	}
}
int main()
{
	int TT = 1;
	cin >> TT;
	while (TT--)
	{
		solve();
	}
	return 0;
}
相关推荐
侃侃_天下2 天前
最终的信号类
开发语言·c++·算法
echoarts2 天前
Rayon Rust中的数据并行库入门教程
开发语言·其他·算法·rust
Aomnitrix2 天前
知识管理新范式——cpolar+Wiki.js打造企业级分布式知识库
开发语言·javascript·分布式
每天回答3个问题2 天前
UE5C++编译遇到MSB3073
开发语言·c++·ue5
伍哥的传说2 天前
Vite Plugin PWA – 零配置构建现代渐进式Web应用
开发语言·前端·javascript·web app·pwa·service worker·workbox
小莞尔2 天前
【51单片机】【protues仿真】基于51单片机的篮球计时计分器系统
c语言·stm32·单片机·嵌入式硬件·51单片机
小莞尔2 天前
【51单片机】【protues仿真】 基于51单片机八路抢答器系统
c语言·开发语言·单片机·嵌入式硬件·51单片机
liujing102329292 天前
Day03_刷题niuke20250915
c语言
我是菜鸟0713号2 天前
Qt 中 OPC UA 通讯实战
开发语言·qt
JCBP_2 天前
QT(4)
开发语言·汇编·c++·qt·算法