제출 #640633

#제출 시각아이디문제언어결과실행 시간메모리
640633ggoh전선 연결 (IOI17_wiring)C++14
100 / 100
65 ms24288 KiB
#include "wiring.h" #include<bits/stdc++.h> using namespace std; #define sz(v) ((int)(v).size()) typedef long long lint; typedef pair<int,int> pii; int rec[200002][2],fow[200002][2]; int n,m; lint D[200002],sum[200002]; vector<pii>V; lint f(int p) { if(D[p]>=0)return D[p]; if(p==0)return D[p]=0; D[p]=1e18; if(fow[p][1-V[p].second]!=-1)D[p]=min(D[p],f(p-1)+V[fow[p][1-V[p].second]].first-V[p].first); if(rec[p][1-V[p].second]!=-1)D[p]=min(D[p],f(p-1)+V[p].first-V[rec[p][1-V[p].second]].first); int ind=rec[p][1-V[p].second]; if(ind!=-1) { int ind2=rec[ind][1-V[ind].second]; if(ind2==-1)ind2=0; if(p-ind<=ind-ind2) { D[p]=min(D[p],f(ind-(p-ind))+sum[p]-sum[ind]-(sum[ind]-sum[ind-(p-ind)])); } } return D[p]; } lint min_total_length(vector<int> r, vector<int> b) { lint ans=0; n=sz(r),m=sz(b); for(int i=0;i<n;i++)V.push_back({r[i],0}); for(int j=0;j<m;j++)V.push_back({b[j],1}); V.push_back({-1e9,0}); sort(V.begin(),V.end()); n=sz(V)-1; rec[0][0]=rec[0][1]=-1; sum[0]=0; for(int i=1;i<=n;i++) { rec[i][0]=rec[i-1][0]; rec[i][1]=rec[i-1][1]; rec[i][V[i].second]=i; sum[i]=sum[i-1]+V[i].first; } fow[n+1][0]=fow[n+1][1]=-1; for(int i=n;i>=1;i--) { fow[i][0]=fow[i+1][0]; fow[i][1]=fow[i+1][1]; fow[i][V[i].second]=i; } memset(D,-1,sizeof(D)); ans=f(n); //for(int i=1;i<=n;i++)for(int j=0;j<7;j++)printf("%d %d %lld %lld\n",i,j,D[i][j][0],D[i][j][1]); return ans; }
#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...