제출 #64937

#제출 시각아이디문제언어결과실행 시간메모리
64937mirbek01선물상자 (IOI15_boxes)C++17
100 / 100
513 ms196160 KiB
#include "boxes.h" # include <bits/stdc++.h> using namespace std; long long d1[10000005], d2[10000005]; long long delivery(int N, int K, int L, int p[]) { long long ans = 1e18; for(int i = 0; i < N; i ++){ if(i < K){ d1[i] = p[i] + min(L - p[i], p[i]); } else { d1[i] = (p[i] + min(L - p[i], p[i])) + d1[i - K]; } } for(int i = N - 1, cn = 0; i >= 0; i --, cn ++){ if(cn < K){ d2[i] = (L - p[i]) + min(L - p[i], p[i]); } else { d2[i] = ((L - p[i]) + min(L - p[i], p[i])) + d2[i + K]; } } for(int i = 0; i < N; i ++){ ans = min(ans, d1[i] + d2[i + 1]); } long long res = 0; for(int j = 0; j < N; j += K){ res += (L - p[j]) + min(p[j], L - p[j]); } ans = min(ans, res); return ans; }
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