Submission #2215902

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;

#define rep(i,n) for(int i=0,i##_len=(n);i<i##_len;i++)
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define ROF(i,a,b) for(int i=(a)-1;i>=(b);i--)
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend() //sortで大きい順
#define UNIQUE(v) v.erase(unique(all(v)),v.end())
#define SUM(a) accumulate(all(a),0)
#define pb push_back
#define fst first
#define snd second
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<string> vs;
typedef pair<int,int> pii;
typedef long long ll;

main(){
  ll n,a,b; cin >> n >> a >> b;
  ll ans = 0;
  vector<ll> x(n);
  rep(i,n){
    cin >> x[i];
  }

  rep(i,n-1){
    if( (x[i + 1] - x[i]) * a < b) ans += (x[i + 1] - x[i]) * a;
    else ans += b;
  }
  cout << ans << endl;
}

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Judge Result