제출 #132442

#제출 시각아이디문제언어결과실행 시간메모리
132442mraron전선 연결 (IOI17_wiring)C++14
100 / 100
75 ms10212 KiB
#include "wiring.h" #include<bits/stdc++.h> using namespace std; typedef long long ll; #define sz(x) (int)(x).size() #define pb push_back const ll inf=1LL<<38; ll min_total_length(vector<int> r, vector<int> b) { vector<pair<ll,int>> lst; for(int i=0;i<sz(r);++i) lst.emplace_back(r[i], 0); for(int i=0;i<sz(b);++i) lst.emplace_back(b[i], 1); sort(lst.begin(), lst.end()); vector<ll> dp(sz(lst)), szum(sz(lst)); szum[0]=lst[0].first; for(int i=1;i<sz(lst);++i) szum[i]+=szum[i-1]+lst[i].first; int ind=0; while(lst[ind].second==lst[0].second) { dp[ind]=inf+lst[ind].first+(ind>0?dp[ind-1]:0LL); ind++; } auto cost=[&](int l, int mid, int r) -> ll { ll len1=mid-l+1; ll len2=r-mid; ll szum1=szum[mid]-(l>0?szum[l-1]:0LL); ll szum2=szum[r]-szum[mid]; if(len1>len2) { szum2+=(len1-len2)*lst[mid+1].first; }else { szum1+=(len2-len1)*lst[mid].first; } return szum2-szum1+(l-1>=0?dp[l-1]:0LL); }; int prev_start=0; for(int i=ind;i<sz(dp);) { int start=i, mid=i-1, j=i-1; while(i<sz(dp) && lst[i].second==lst[start].second) { while(j>prev_start && cost(j,mid,i)>=cost(j-1,mid,i)) j--; dp[i]=min(cost(j,mid,i), dp[start-1]+szum[i]-szum[start-1]-lst[start-1].first*(i-start+1)); i++; } prev_start=start; } //for(int i=0;i<sz(dp);++i) cerr<<dp[i]<<" \n"[i==sz(dp)-1]; return dp.back(); }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...