제출 #465339

#제출 시각아이디문제언어결과실행 시간메모리
465339dattranxxxArranging Shoes (IOI19_shoes)C++14
0 / 100
1 ms332 KiB
/* * Author : shora */ #include "shoes.h" #include <bits/stdc++.h> #define print(_v) for (auto &_ : _v) {cerr << _ << ' ';} cerr << endl; using namespace std; using ll = long long; const int oo = 1e9; ll n; namespace task_2 { ll solve(vector<int>& a) { return 2; } } namespace task_3 { bool check(vector<int>& a) { for (int i = 0; i < n; ++i) if (a[i] > 0 || a[i] != -a[i+n]) return 0; return 1; } } long long count_swaps(std::vector<int> a) { n = a.size() / 2; if (n == 1) return a[0] < 0; if (task_3::check(a)) return n * (n-1); if (n <= 8) return task_2::solve(a); return -1; }
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