Submission #73367738

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using ull=unsigned long long;
using ld=long double;
template<typename T>using vec=vector<T>;
template<typename T>using mat=vec<vec<T>>;
#define rep(n) for(ull _i=0;_i<(ull)(n);++_i)
#define ufor(i,a,b) for(ll i=(ll)(a);i<(ll)(b);++i)
#define dfor(i,a,b) for(ll i=(ll)(a);i>=(ll)(b);--i)
#define all(A) A.begin(),A.end()
#define rall(A) A.rbegin(),A.rend()
template<typename T>
istream&operator>>(istream&is,vec<T>&V) {
  for(ll i=0;i<(ll)V.size();++i) is>>V[i];
  return is;}
template<typename T1,typename T2>
ostream&operator<<(ostream&os,pair<T1,T2>p) {
  os<<"("<<p.first<<","<<p.second<<")";
  return os;}
template<typename T>
ostream&operator<<(ostream&os,const vec<T>&V) {
  for(ll i=0;i<(ll)V.size();++i)os<<V[i]<<(i==V.size()-1?"":" ");
  return os;}
template<typename T> 
ostream&operator<<(ostream&os,const mat<T>&M) {
  for(ll i=0;i<(ll)M.size();++i) os<<M[i]<<(i==M.size()-1?"":"\n");
  return os;}
template<typename T>
ostream&operator<<(ostream&os,const set<T>&S) {
  for(auto it=S.begin();it!=S.end();++it) os<<*it<<(it==--S.end()?"":" ");
  return os;}
inline bool in_range(const ll y, const ll x, const ll H, const ll W) {
  return y>=0&&y<H&&x>=0&&x<W;}
inline ull next_combination(ull c) {
  ull x = c & -c, y = c + x;
  return (((c & ~y) / x) >> 1) | y;}
class Timer {
  chrono::system_clock::time_point Time_start;
  public:
  Timer():Time_start(chrono::system_clock::now()){}
  void stop() {
    cout<<std::chrono::duration_cast<std::chrono::milliseconds>(chrono::system_clock::now()-Time_start);
  }
};
constexpr int inf = (1<<30)-1;
constexpr ll infl = 1LL<<60;

void solve() {
  ll n, m, d;
  cin >> n >> m >> d;
  ll ans = 0;
  rep(n) {
    ll t;
    cin >> t;
    ans += max((t - m + d - 1) / d, 0LL);
  }
  cout << ans << endl;
  return;
}

int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout << fixed << setprecision(15);
  //Timer time;
  solve();
  //time.stop();
  return 0;
}

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