Submission #3413538

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Source Code Expand

#include<bits/stdc++.h>
#define ALL(c) (c).begin(),(c).end()
#define EACH(i,c) for(auto i=(c).begin();i!=(c).end();++i)
using namespace std;
#define int long long

signed main(){
	int N, A, B;
	cin >> N >> A >> B;
	vector<int> X(N);
	for(int i = 0; i < N; ++i) {
		cin >> X[i];
	}
	int res = 0;
	for(int i = 0; i < N - 1; ++i) {
		res += min(B, A * (X[i+1] - X[i]));
	}
	cout << res << endl;
	return 0;
}

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