[sicily]1433. Optimal Parking
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1433. Optimal Parking
Constraints
Time Limit: 1 secs, Memory Limit: 32 MB
Description
When shopping on Long Street, Michael usually parks his car at some random location, and then walks to the stores he needs. Can you help Michael choose a place to park which minimises the distance he needs to walk on his shopping round? Long Street is a straight line, where all positions are integer. You pay for parking in a specific slot, which is an integer position on Long Street. Michael does not want to pay for more than one parking though. He is very strong, and does not mind carrying all the bags around.
Input
The first line of input gives the number of test cases, 1 ≤ t ≤ 100. There are two lines for each test case. The first gives the number of stores Michael wants to visit, 1 ≤ n ≤ 20, and the second gives their n integer positions on Long Street, 0 ≤ xi ≤ 99.
Output
Output for each test case a line with the minimal distance Michael must walk given optimal parking.
Sample Input
2424 13 89 3767 30 41 14 39 42
Sample Output
15270
简单计算题。求Michael 走的最小路程,简单思想就是停在最左边的店门口,走到最右边的店,然后回来。所以,只需求出最大最小值即可得。代码如下:
#include <iostream>using namespace std;int main(){ int t; cin>>t; while(t--) { int n,tmp; cin>>n; int max = -1, min = 100; for(int i=0; i<n; i++) { cin>>tmp; if(tmp>max)max=tmp; if(tmp<min)min=tmp; } cout<<((max-min)<<1)<<endl; } //system("pause"); return 0;}
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