제출 #891832

#제출 시각아이디문제언어결과실행 시간메모리
89183212345678선물상자 (IOI15_boxes)C++17
100 / 100
450 ms372404 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long const int nx=1e7+5; ll mnl[nx], mnr[nx], res=LLONG_MAX; long long delivery(int N, int K, int L, int p[]) { vector<ll> v(N+2); for (int i=0; i<N; i++) v[i+1]=p[i]; v[N+1]=L; for (int i=1; i<=N; i++) { mnr[i]=mnr[max(i-K, 0)]+v[i]+min(v[i], L-v[i]); } for (int i=N; i>=1; i--) { mnl[i]=mnl[min(N+1, i+K)]+(L-v[i])+min(v[i], L-v[i]); } for (int i=0; i<=N; i++) res=min(res, mnr[i]+mnl[i+1]); return res; }
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