Submission #227985

#	Time	Username	Problem	Language	Result	Execution time	Memory
227985		AaronNaidu	고대 책들 (IOI17_books)	C++14	12 / 100	5 ms	384 KiB

books

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

ll minimum_walk(vector<int> p, int s) {
    int trueLength = p.size();
    for (int i = p.size() - 1; i >= 0; i--)
    {
        if (p[i] == i)
        {
            trueLength--;
        }
        else
        {
            break;
        }
    }
    ll toRet = 0;
    int startPoint = 0;
    int maxSoFar = -1;
    for (int i = 0; i < trueLength; i++)
    {
        maxSoFar = max(maxSoFar, p[i]);
        if (maxSoFar == i)
        {
            for (int j = startPoint; j <= i; j++)
            {
                toRet += abs(j - p[j]);
            }
            if (i < trueLength - 1)
            {
                toRet += abs(startPoint - (i+1));
                startPoint = i+1;
            }
        }
    }
    toRet += startPoint;
    return toRet;
}

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