제출 #1085455

#제출 시각아이디문제언어결과실행 시간메모리
1085455alexdd선물상자 (IOI15_boxes)C++17
10 / 100
1 ms348 KiB
#include "boxes.h" #include <bits/stdc++.h> using namespace std; const long long INF = 1e18; long long delivery(int N, int K, int L, int p[]) { long long rez=INF; int pozle=0,pozri=N-1; int ramase=0; while(p[pozle]==0) { pozle++; ramase++; } long long cur=0; for(int cnt=(N-1)/K+1;cnt>=0;cnt--) { pozle=0; pozri=N-1; cur=0; ramase=0; while(p[pozle]==0) { pozle++; ramase++; } while(ramase < N - cnt*K) { int d = min(K, N - cnt*K - ramase); if(p[pozle+d-1] <= L - p[pozri-d+1]) { cur += p[pozle+d-1]*2; pozle += d; } else { cur += (L - p[pozri-d+1])*2; pozri -= d; } ramase += d; } rez = min(rez, 1LL*cnt*L + cur); } return rez; } /* 3 2 8 1 2 5 output: 10 */
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