目标:您的车辆以速度v0移动,并具有a的加速.在x米后找到速度v1.计算速度的公式是:v1 ^ 2 - v0 ^ 2 = 2 * a * x 公式只适用于以下单位,您可能需要进行一些转换:m/s为v1和v0 m/s^2为m为x,注意单位!输入:行1:v0,由原始速度 (整数) 和单位组成,由空间分开.单位可以是m/s或km/h行2:整数 a,加速,以每秒平方米行3:整数 x,距离,输入:输出您必须输出一个行,速度v1圆到最近的整数单位,由同一单位分开,使用单位v0.
Here's a possible solution in Python:

```
import math

# Convert km/h to m/s
def kmh_to_ms(speed):
    return speed / 3.6

# Convert m/s to km/h
def ms_to_kmh(speed):
    return speed * 3.6

# Parse the input
v0_input, v0_unit = input().split()
v0 = int(v0_input)
a = int(input())
x = int(input())

# Convert v0 to m/s if needed
if v0_unit == "km/h":
    v0 = kmh_to_ms(v0)

# Calculate v1
v1_squared = v0 ** 2 + 2 * a * x
v1 = math.sqrt(v1_squared)

# Convert v1 to km/h if needed
if v0_unit == "km/h":
    v1 = ms_to_kmh(v1)

# Round v1 to the nearest integer
v1_rounded = round(v1)

# Output the result
print(str(v1_rounded) + " " + v0_unit)
```

First, we define two functions to convert between km/h and m/s. Then, we read the input values and parse them appropriately. We convert v0 to m/s if needed and calculate v1 using the formula. We convert v1 back to km/h if needed and round it to the nearest integer. Finally, we output the result in the requested format. Note that we use the `math` module to calculate the square root of v1_squared.