제출 #445138

#제출 시각아이디문제언어결과실행 시간메모리
445138fuad27선물상자 (IOI15_boxes)C++14
100 / 100
519 ms196208 KiB
#include<iostream> using namespace std;typedef long long L;L delivery(int n,int k,int l,int p[]){L pref[n],suf[n];for(L i=0;i<n;i++){if(i>=k)pref[i]=pref[i-k]+min(p[i]*2,l);else pref[i]=min(p[i]*2,l);L j=n-i-1;if(n-j-1>=k)suf[j]=min(l,2*(l-p[j]))+suf[j+k];else suf[j]=min(l,2*(l-p[j]));}L ans=min(suf[0],pref[n-1]);for(L i=1;i<n;i++)ans=min(ans,pref[i-1]+suf[i]);return ans;}
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