Submission #1258490

#TimeUsernameProblemLanguageResultExecution timeMemory
1258490medmdgFestival (IOI25_festival)C++20
32 / 100
395 ms22700 KiB
#include "festival.h"
#include<bits/stdc++.h>
#define mk(a,b) make_pair(a,b)
#define pb(a) push_back(a)
using namespace std;
typedef long long ll;
ll n;
vector<pair<ll,int>> t[4];
set<pair<ll,ll>> s;
ll a;
vector<ll> p;
ll M=1e15;
ll tot=0;
int getP1(ll a){
  if(a<0)return 0;
  set<pair<ll,ll>>::iterator t=s.lower_bound(mk(a+1,-1));
  if(t==s.begin())return 0;
  t--;
  ll ans= (*t).second;
  return ans;
}
vector<int> sub3(){
  ll ma=getP1(a);
  ll nb=0;
  
  for(int i=0;i<t[1].size();i++){
    a-=t[1][i].first;
    if(a<1e17)
      a*=2;
    if(a<0)break;
    ll nma=getP1(a)+i+1;
    if(nma>ma){
      ma=nma;
      nb=i+1;
    }
  }
  vector<int> ans;
  for(int i=0;i<nb;i++){
    ans.push_back(t[1][i].second);
  }
  for(int i=nb;i<ma;i++){
    ans.push_back(t[0][i-nb].second);
  }
  return ans;
}

ll pick_best(ll a,ll v1,ll v2,ll v3){
  a=min(a,M);
  ll xa=a-2*v1,xb=2*a-3*v2,xc=3*a-4*v3;
  if(v1==-1){
    if(v2==-1)return 2;
    if(v3==-1)return 1;
    if(3*xb>=2*xc)return 1;
    return 2;
  }else if(v2==-1){
    if(v3==-1)return 0;
    if(3*xa>=xc)return 0;
    return 2;
  }
  else{
    if(v3==-1){
      if(2*xa>=xb) return 0;
      return 1;
    }
  }
  if(2*xa>=xb){
    if( 3*xa>=xc)return 0;
    return 2;
  }
  if(3*xb>=2*xc)return 1;
  return 2;
}
ll pick_best2(ll a,ll v1,ll v2,ll v3){
    a=min(a,M);
    ll xa=2*(a-v1),xb=3*(a-v2),xc=4*(a-v3);
    if(v1==-1){
        if(v2==-1)return 2;
        if(v3==-1)return 1;
        if(xb>=xc)return 1;
        return 2;
    }else if(v2==-1){
        if(v3==-1)return 0;
        if(xa>=xc)return 0;
        return 2;
    }
    else{
        if(v3==-1){
            if(xa>=xb) return 0;
            return 1;
        }
    }
    if(xa>=xb){
        if( xa>=xc)return 0;
        return 2;
    }
    if(xb>=xc)return 1;
    return 2;
}
pair<vector<int>,int> sub5(int maTurns){
    ll ta=a;
  vector<int> ans;
  ll i=0,j=0,k=0;
    while(i<t[1].size()||j<t[2].size()||k<t[3].size()){
        ll v1=-1,v2=-1,v3=-1;
        if(i<t[1].size())  v1=t[1][i].first;
        if(j<t[2].size())  v2=t[2][j].first;
        if(k<t[3].size())  v3=t[3][k].first;
        ll v=pick_best(ta,v1,v2,v3);
        if(v==0)ans.pb(t[1][i++].second);
        if(v==1)ans.pb(t[2][j++].second);
        if(v==2)ans.pb(t[3][k++].second);
        if(ta-p[ans.back()]<0){
            ans.pop_back();
            break;
        }
        if(ta>=M){continue;}
        if((ta-p[ans.back()])*(v+2)<ta){
            ans.pop_back();
            break;
        }
        ta-=p[ans.back()];
        ta*=(v+2);
    }
  while(i+j+k<maTurns && (i<t[1].size()||j<t[2].size()||k<t[3].size())){
    ll v1=-1,v2=-1,v3=-1;
    if(i<t[1].size())  v1=t[1][i].first;
    if(j<t[2].size())  v2=t[2][j].first;
    if(k<t[3].size())  v3=t[3][k].first;
    ll v=pick_best(ta,v1,v2,v3);
    if(i+j+k==maTurns-1){
        v= pick_best2(ta,v1,v2,v3);
    }
    if(v==0)ans.pb(t[1][i++].second);
    if(v==1)ans.pb(t[2][j++].second);
    if(v==2)ans.pb(t[3][k++].second);
    if(ta-p[ans.back()]<0){
        ans.pop_back();
        break;
    }
    if(ta>M){maTurns++;continue;}
    if((ta-p[ans.back()])*(v+2)>=ta){
        maTurns++;
    }else if(i+j+k==maTurns){
        ans.pop_back();
        break;
    }
    ta-=p[ans.back()];
    ta*=(v+2);
  }
  int c2=getP1(ta);
  return mk(ans,c2);
}
vector<int> sub6(){
    int val=getP1(a);
    vector<int> ans;
    for(int i=0;i<=80;i++){
        pair<vector<int>,int> t=sub5(i);
        if(t.first.size()+t.second>val){
            val=t.first.size()+t.second;
            ans=t.first;
        }
    }
    int v=ans.size();
    for(int i=v;i<val;i++){
        ans.push_back(t[0][i-v].second);
    }
    return ans;
}
vector<int> max_coupons(int A, vector<int> P, vector<int> T) {
  for(int i=0;i<4;i++)t[i].clear();
  for(int i=0;i<T.size();i++){
    t[T[i]-1].push_back(mk(P[i],i));
  }
  for(int i=0;i<4;i++)  sort(t[i].begin(),t[i].end());
  s.clear();
  s.insert(mk(0,0));
  ll ps=0;
  for(int i=0;i<t[0].size();i++){ ps+=t[0][i].first;s.insert(mk(ps,i+1));}
  n=P.size();
  a=A;
  p.clear();
  for(auto x:P)p.push_back(x);
  return sub6();
}
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