Submission #432282

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
432282	2021-06-18 07:18:31	kai824	Long Distance Coach (JOI17_coach)	C++17	100 / 100	178 ms	17896 KiB

coach

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#include<bits/stdc++.h>
using namespace std;
#define int long long
typedef pair<int,int> pii;
#define f first
#define s second
#define mp make_pair
int x,n,m,w,t;
int kp[200005],dp[200005];
int dea[200005];
pii ppl[200005];
inline int calc(int dj,int cur_time){
  return ((cur_time/t) + (dj<=(cur_time%t)?1:0))*w;
}
vector<pair<int,pii> >cht;
int inter(pii a,pii b){
  return (b.s-a.s)/(a.f-b.f);
}
void add_line(int m,int c){//strictly decreasing gradients...
  pii ll=mp(m,c);
  while(cht.size()>1 && inter(ll,cht.back().s)<=cht[cht.size()-2].f){
    cht.pop_back();
  }
  if(cht.size()>0)cht.back().f=inter(cht.back().s,ll);
  cht.emplace_back(LLONG_MAX,ll);
 
 
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• Subtask 1: 16 / 16
• Subtask 2: 30 / 30
• Subtask 3: 25 / 25
• Subtask 4: 29 / 29