Submission #679613

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
679613	2023-01-08 16:36:50	alirezasamimi100	Aliens (IOI16_aliens)	C++17	100 / 100	242 ms	14528 KiB

aliens

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#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long int;
using pll = pair<ll, ll>;
using ld = long double;
using pld = pair<ld, int>;
using pdd = pair<ld, ld>;
#define pb push_back
#define F first
#define S second
const ld eps = 1e-19;
const int N = 1e5 + 10;
vector<pll> vec;
pld dp[N];
int n;
struct CHT{
  const ld INF=1e18;
  pair<ld, pair<pdd,int>> A[N];
  int L, R;
  CHT(){
    L=R=0;
  }
  inline ld Intersect(pdd a, pdd b){
    if (a.first==b.first) return (a.second>=b.second?-INF:INF);
    return (a.second-b.second)/(b.first-a.first);
  }
  inline void Add(pair<pdd,int> X){
    while (L<R && Intersect(A[R-1].second.first, X.first)<=A[R-1].first) R--;
 
 
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• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 9 / 9
• Subtask 4: 16 / 16
• Subtask 5: 19 / 19
• Subtask 6: 40 / 40