oj.uz

Submission #987158

# Submission time Handle Problem Language Result Execution time Memory
987158 2024-05-22T05:59:07 Z AdamGS Ancient Books (IOI17_books) C++17
0 / 100
 2 ms 348 KB 
#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 int LIM=1e6+7;
ll F[LIM], mi[LIM], ma[LIM];
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 minimum_walk(vector<int>p, int s) {
  ll n=p.size();
  rep(i, n) {
    F[i]=ma[i]=mi[i]=i;
    S.insert(i);
  }
  rep(i, n) uni(i, p[i]);
  vector<pair<pair<ll,ll>,pair<ll,ll>>>V;
  rep(i, n) if(fnd(i)==i) V.pb({{ma[i]-mi[i], i}, {mi[i], ma[i]}});
  sort(all(V));
  for(auto i : V) {
    while(true) {
      auto it=S.lower_bound(i.nd.st);
      if(it==S.end()) break;
      auto a=*it;
      if(a>i.nd.nd) break;
      S.erase(a);
      uni(i.st.nd, a);
    }
  }
  ll ans=0;
  rep(i, n) ans+=abs(p[i]-i);
  ll akt=ma[fnd(s)]+1;
  while(akt<n) {
    ans+=2;
    akt=ma[fnd(akt)]+1;
  }
  return ans;
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3506'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Incorrect 1 ms 348 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -