Submission #1694445

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Source Code Expand

#include<iostream>
#include<iomanip>
#include<math.h>
#include<vector>
#include<algorithm>
#include<set>
#include<map>
#include<queue>
#include<stack>
#include<string>
#include<time.h>
#define INF 1000000000ll
#define MOD 1000000007ll
#define EPS 1e-10
#define REP(i,m) for(long long i=0; i<m; ++i)
#define FOR(i,n,m) for(long long i=n; i<m; ++i)
#define DUMP(n,a) for(long long dump=0; dump<n; ++dump) { cout<<a[dump]; if(dump!=n-1) cout<<" "; else cout<<endl; }
#define ALL(v) v.begin(),v.end()
#define pb push_back
using namespace std;
typedef long long ll;
typedef pair<ll, ll> P;
typedef long double ld;

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	ll n,a,b;
	cin>>n>>a>>b;
	vector<ll> x(n);
	REP(i,n) cin>>x[i];
	ll ret=0;
	REP(i,n-1) {
		if((x[i+1]-x[i])*a>b) ret+=b;
		else ret+=(x[i+1]-x[i])*a;
	}
	cout<<ret<<endl;
}

Submission Info

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