제출 #399793

#제출 시각아이디문제언어결과실행 시간메모리
399793LucaDantas고대 책들 (IOI17_books)C++17
50 / 100
159 ms18756 KiB
#include "books.h" #include <cstdio> #include <cassert> #include <cmath> constexpr int maxn = 1e6+10; int opa[maxn]; long long minimum_walk(std::vector<int> p, int s) { int n = (int)p.size(); long long ans = 0; int fim = 0; for(int i = 0; i < n; i++) { fim = std::max(fim, p[i]); ans += abs(i - p[i]); if(fim > i) opa[i] = 1; } int a = 0; for(int i = 0; i < n; i++) { if(!opa[i]) ++a; else ans += a<<1, a = 0; } return ans; }
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