| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1348272 | inesfi | 고대 책들 (IOI17_books) | C++20 | 0 ms | 344 KiB |
#include "books.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long
vector<int> prochain;
vector<int> dejavu;
void dfs(int pos){
if (dejavu[pos]==1){
return ;
}
dejavu[pos]=1;
dfs(prochain[pos]);
}
ll minimum_walk(vector<int> p, int depart) {
prochain=p;
int n=prochain.size();
ll rep=0;
for (int i=0;i<n;i++){
rep+=abs(i-prochain[i]);
}
dejavu.resize(n);
int avant=0;
for (int i=0;i<n;i++){
if (dejavu[i]==0){
rep+=i-avant;
dfs(i);
avant=i;
}
}
return rep+avant;
}
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