#include<bits/stdc++.h>
using namespace std;
void read(long long &h){
    char o;
    long long x=0,y=1;
    o=getchar_unlocked();
    while(!(o<='9'&&o>='0')){
        if(o=='-'){
            y=-1;
        }
        o=getchar_unlocked();
    }
    while(o<='9'&&o>='0'){
        x*=10;
        x+=o-'0';
        o=getchar_unlocked();
    }
    h=x*y;
    return ;
}
long long n,m,cmp,sum;
int main(){
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    read(n);read(m);
    for(int i=1;i<=n;i++){
        read(cmp);
        sum+=cmp;
    }\
    cout<<sum+m*n;
    return 0;
}