#include <iostream>
#include<algorithm>
#include<vector>
using namespace std;
int main() {
int n,k,x;
vector<int> v;
cin>>n>>k>>x;
for(int i=0;i<n;i++){
int a;
cin>>a;
v.push_back(a);
}
int sum=0;
sort(v.begin(),v.end());
for(int i=0;i<n;i++){
if(k-- && v[i]<x){
sum+=v[i];
}
}
cout<<sum;
return 0;
}
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