제출 #134567

#제출 시각아이디문제언어결과실행 시간메모리
13456720160161simone선물상자 (IOI15_boxes)C++14
20 / 100
2 ms504 KiB
#include "boxes.h" #include <bits/stdc++.h> #define M 10000010 #define inf 0x3f3f3f3f using namespace std; long long mi[M],dpl[M],dpr[M]; long long delivery(int N, int K, int L, int p[]) { if(K==1) { long long ans=0; for(int i=0;i<N;i++) ans+=min(abs(L-p[i]),abs(p[i]))*2; return ans; } if(K==N) { int li=p[0],lx=p[0],ri=p[N-1],rx=p[N-1]; for (int i=0;i<N;i++) { if(p[i]*2<L) lx=p[i]; if(p[i]*2==L) return L; if(p[i]*2>L) { ri=p[i]; break; } } if(li*2>L) return (L-li)*2;//* else if(rx*2<L)return rx*2;//* else if (L<lx*2+(L-ri)*2) return L; else return lx*2+(L-ri)*2;//* } dpl[0]=0; for(int i=1;i<=N;i++) dpl[i]=dpl[max(i-K,0)]+p[i-1]*2; dpr[N+1]=0; for(int i=N;i>=1;i--) dpr[i]=dpr[min(N+1,i+K)]+(L-p[i-1])*2; long long ans=inf; for(int i=1;i<=N+1;i++) ans=min(ans,dpl[i-1]+dpr[i]); for(int i=0;i<N;i++) { if(i+K<=N) { ans=min(ans,L+dpl[i]+dpr[i+K+1]); } } return ans; }
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