Submission #903807

#	Time	Username	Problem	Language	Result	Execution time	Memory
903807		AdamGS	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	90 ms	16588 KiB

railroad

#include "railroad.h"
#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const ll INF=1e18+7;
ll plan_roller_coaster(vector<int>S, vector<int>T) {
  int n=S.size();
  vector<pair<ll,ll>>V;
  rep(i, n) {
    V.pb({S[i], 1});
    V.pb({T[i], -1});
  }
  sort(all(V));
  ll lst=V[0].st, sum=-1, ans=0;
  int czy=0;
  for(auto i : V) {
    ans+=(i.st-lst)*max(sum, 0ll);
    if(i.st!=lst) {
      if(sum!=0) {
        if(czy==2) {
          return 1;
        }
        czy=1;
      } else if(czy==1) czy=2;
    }
    sum+=i.nd;
    lst=i.st;
  }
  return ans;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36