Submission #1070631

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <string>
#include <map>
#include <vector>
using namespace std;


int main() {
	long long n, a, b, c;
	long long x[100000];
	long long ans = 0;
	cin >> n >> a >> b;
	for (int i = 0; i < n; i++) {
		cin >> x[i];
	}
	for (int i = 0; i < n - 1; i++) {
		c = x[i + 1] - x[i];
		if (b > c*a) {
			ans += c*a;
		}
		else {
			ans += b;
		}
	}
	cout << ans << endl;
	return 0;
}

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