제출 #227992

#제출 시각아이디문제언어결과실행 시간메모리
227992AaronNaiduAncient Books (IOI17_books)C++14
12 / 100
5 ms384 KiB
#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 += 2 * startPoint; return toRet; }
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