Submission #1868655

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Source Code Expand

#include<bits/stdc++.h>
#define r(i,n) for(int i=0;i<n;i++)
using namespace std;
bool used[50];
typedef pair<int,int>P;
int dx[]={-1,1};
int main(){
  int n,m;
  cin>>n>>m;
  int a[n+2];
  a[0]=0,a[n+1]=m;
  r(i,n)cin>>a[i+1];
  sort(a,a+n);
  int ans=0;
  r(i,n+2){
    ans+=min((m-a[i])*2,a[i]*2);
  }
  cout<<ans<<endl;
}

Submission Info

Judge Result