제출 #238004

#제출 시각아이디문제언어결과실행 시간메모리
238004Kubin선물상자 (IOI15_boxes)C++11
25 / 100
6 ms512 KiB
#include <bits/stdc++.h> using namespace std; long long delivery(int _n, int _k, int l, int p[]) { size_t n = _n, k = _k; vector<int> A[2]; A[0].reserve(n); A[1].reserve(n); for(size_t i = 0; i < n; i++) if(p[i]) { if(p[i] <= l/2) A[0].push_back(p[i]); else A[1].push_back(l - p[i]); } reverse(A[1].begin(), A[1].end()); size_t ni = n; int64_t result = INT64_MAX, base = 0; while(ni) { int64_t curr = base; for(size_t t = 0; t < 2; t++) for(size_t i = A[t].size() - 1; i < A[t].size(); i -= k) curr += 2 * A[t][i]; result = min(result, curr); for(size_t i = 0; i < k and ni; i++, ni--) { if(A[0].empty()) A[1].pop_back(); else if(A[1].empty()) A[0].pop_back(); else if(A[0].back() < A[1].back()) A[1].pop_back(); else A[0].pop_back(); } base += l; } result = min(result, base); return result; }
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