Submission #6902370

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;
#define rep(i,N) for(int i=0,i##_max=(N);i<i##_max;++i)
#define repp(i,l,r) for(int i=(l),i##_max=(r);i<i##_max;++i)
#define per(i,N) for(int i=(N)-1;i>=0;--i)
#define perr(i,l,r) for(int i=r-1,i##_min(l);i>=i##_min;--i)
#define all(arr) (arr).begin(), (arr).end()
#define SP << " " <<
#define SPF << " "
#define SPEEDUP cin.tie(0);ios::sync_with_stdio(false);
#define MAX_I INT_MAX //1e9
#define MIN_I INT_MIN //-1e9
#define MAX_UI UINT_MAX //1e9
#define MAX_LL LLONG_MAX //1e18
#define MIN_LL LLONG_MIN //-1e18
#define MAX_ULL ULLONG_MAX //1e19
  typedef long long ll;
  typedef pair<int,int> PII;
  typedef pair<char,char> PCC;
  typedef pair<ll,ll> PLL;
  typedef pair<char,int> PCI;
  typedef pair<int,char> PIC;
  typedef pair<ll,int> PLI;
  typedef pair<int,ll> PIL; 
  typedef pair<ll,char> PLC; 
  typedef pair<char,ll> PCL; 

inline void YesNo(bool b){ cout << (b?"Yes" : "No") << endl;}
inline void YESNO(bool b){ cout << (b?"YES" : "NO") << endl;}
inline void Yay(bool b){ cout << (b?"Yay!" : ":(") << endl;}

int main(void){
  SPEEDUP
  cout << setprecision(15);
  ll N,H;cin >> N >> H;
  ll A,B,C,D,E;cin >> A >> B >> C >> D >> E;
  //食事する日数(0=N)
  ll ans = MAX_LL;
  rep(d,N+1){
    if( (ll) d*B+H <= (ll)(N-d)*E )continue;
    //質素の数
    ll s = 0, e = d+1;
    while(e-s>1){
      ll m = (s+e)/2;
      if( (ll) m*D + (d-m)*B + H <= (ll) (N-d)*E) e = m;
      else s = m;
    }
    ans = min(ans, s*C + (d-s)*A);
  }
  cout << ans << endl;
  return 0;
}

Submission Info

Judge Result