제출 #751869

#제출 시각아이디문제언어결과실행 시간메모리
751869Seb선물상자 (IOI15_boxes)C++17
0 / 100
1 ms212 KiB
#include "boxes.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; long long delivery(int N, int K, int L, int p[]) { ll ans=0; int l=0,r=N-1,aux,in; bool flag = false; sort(p,p+N); for (;l<N;l+=K) { flag = false; aux = min(l+K-1,N-1); if (p[aux]>L/2 || p[l]>L/2) break; ans += min({L,2*p[aux],2*(L-p[l])}); flag = true; } if (flag==false) l -= K; for (;r>=0;r-=K) { flag = false; aux = max(r-K+1,0); if (p[aux]<=L/2 || p[r]<=L/2) break; ans += min({L,2*p[r],2*(L-p[aux])}); flag = true; } if (flag==false) r += K; for (in=l;in<=r;in++) if (p[in]>L/2) break; in--; ans += min(2*L,2*p[in] + 2*(L-p[in+1])); return ans; }
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