Submission #1734819

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cmath>
#include<cstring>
#include<string>
#include<stack>
#include<queue>
#include<vector>
#include<algorithm>
#include<iomanip>
typedef long long int ll;
using namespace std;
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define REP(i,n) for (int i=0;i<(n);i++)
#define EREP(i,n) for (int i=1;i<=(n);i++)
#define ALL(a) (a).begin(),(a).end()
#define EVEL 1
 
#ifndef EVEL
#define DEB(X) cout << #X << ":" <<X<<" " ;
#define TF(f) f ? cout<<"true  " : cout<<"false ";
#define END cout<<"\n";
#else
#define DEB(X) {}
#define TF(f) {}
#define END {}
#endif
    ll N,A,B,X[100010];
    ll ans=0;
int main(){
    cin>>N>>A>>B;
    REP(i,N)cin>>X[i];
    REP(i,N-1){
        ans+=min((X[i+1]-X[i])*A,B);
    }
    cout<<ans<<endl;
    return 0;
}

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