Submission #987180

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
987180	2024-05-22 08:28:00	AdamGS	Ancient Books (IOI17_books)	C++17	100 / 100	417 ms	85584 KiB

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#include "books.h"
#include<bits/stdc++.h>
using namespace std;
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=1e9+7;
const int LIM=1e6+7;
ll F[LIM], mi[LIM], ma[LIM], l, r;
set<ll>S;
ll fnd(ll x) {
  if(F[x]==x) return x;
  return F[x]=fnd(F[x]);
}
void uni(int a, int b) {
  if(fnd(a)==fnd(b)) return;
  ma[fnd(a)]=max(ma[fnd(a)], ma[fnd(b)]);
  mi[fnd(a)]=min(mi[fnd(a)], mi[fnd(b)]);
  F[fnd(b)]=fnd(a);
}
ll solve(ll aktl, ll aktr, ll aktmi, ll aktma) {
  if(aktl>aktmi) {
    --aktl;
    aktmi=min(aktmi, mi[fnd(aktl)]);
    aktma=max(aktma, ma[fnd(aktl)]);
    return solve(aktl, aktr, aktmi, aktma);
  }
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 10 / 10
• Subtask 3: 28 / 28
• Subtask 4: 20 / 20
• Subtask 5: 30 / 30