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- #include<bits/stdc++.h>
- using namespace std;
- int a[100009];
- vector<int> v;
- int main(){
- int n,s;
- cin>>n>>s;
- int sa;
- for(int i=1;i<=n;i++){
- cin>>a[i];
- }
- sa=a[s];
- int t=1;
- for(int i=1;i<=n;i++){
- if(a[i]!=sa){
- v.push_back(a[i]);
- }
- }
- if(v.size()==0){
- cout<<0;
- return 0;
- }
- sort(v.begin(),v.end());
- if((v[0]+v[v.size()-1])/2>=sa){
- continue;
- }
- else{
- reverse(v.begin(),v.end());
- }
- int sum=0;
- sum+=abs(sa-v[0]);
- for(int i=0;i<v.size()-1;i++){
- sum+=abs(v[i]-v[i+1]);
- }
- cout<<res;
- return 0;
- }
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