Submission #133384

#	Time	Username	Problem	Language	Result	Execution time	Memory
133384		Osama_Alkhodairy	Ancient Books (IOI17_books)	C++17	50 / 100	181 ms	18860 KiB

books

#include <bits/stdc++.h>
//~ #include "grader.cpp"
#include "books.h"
using namespace std;
#define ll long long

long long minimum_walk(std::vector<int> p, int s) {
	int n = p.size();
    vector <int> c(n);
    ll ret = 0;
    for(int i = 0 ; i < n ; i++){
        ret += abs(i - p[i]);
        int l = i, r = p[i];
        if(l > r) swap(l, r);
        c[l]++;
        c[r]--;
    }
    for(int i = 1 ; i < n ; i++){
        c[i] += c[i - 1];
    }
    int cur = 0;
    for(int i = 0 ; i < n - 1 ; i++){
        if(c[i] == 0) cur++;
        else{
            ret += 2 * cur;
            cur = 0;
        }
    }
    return ret;
}

• Subtask 1: 12 / 12
• Subtask 2: 10 / 10
• Subtask 3: 28 / 28
• Subtask 4: 0 / 20
• Subtask 5: 0 / 30