제출 #66119

#제출 시각아이디문제언어결과실행 시간메모리
66119Hoget157선물상자 (IOI15_boxes)C++14
100 / 100
554 ms196148 KiB
#include <bits/stdc++.h> #define ll long long #define INF 1e+18 using namespace std; ll mi = INF,l[10000010],r[10000010]; ll delivery(int n,int k,int L,int x[]){ l[0] = 0; r[n] = 0; for(ll i = 1;i <= n;i++){ if(i < k){ l[i] = x[i - 1] * 2; r[n - i] = (L - x[n - i]) * 2; } else{ l[i] = l[i - k] + x[i - 1] * 2; r[n - i] = r[n - i + k] + (L - x[n - i]) * 2; } } for(ll i = 0;i <= n;i++) mi = min(mi,l[i] + r[i]); for(ll i = 0;i + k <= n;i++) mi = min(mi,l[i] + L + r[i + k]); return mi; }
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