제출 #791865

#제출 시각아이디문제언어결과실행 시간메모리
791865Khizri전선 연결 (IOI17_wiring)C++17
20 / 100
64 ms13104 KiB
#include "wiring.h" #include <bits/stdc++.h> using namespace std; #define ll long long #define pb push_back #define F first #define S second #define INF 1e18 #define all(v) (v).begin(),(v).end() #define rall(v) (v).rbegin(),(v).rend() #define pii pair<int,int> #define pll pair<ll,ll> #define OK cout<<"Ok"<<endl; #define MOD (ll)(1e9+7) ll dp[500][500]; long long min_total_length(vector<int> a, vector<int> b) { set<int>st; set<int>st2; if(a.size()>b.size()) swap(a,b); for(int v:a){ st2.insert(v); } int n=a.size(),m=b.size(); if(max(n,m)<=200){ for(int i=0;i<=n;i++){ for(int j=0;j<=m;j++){ dp[i][j]=INF; } } dp[0][0]=0; for(int i=1;i<=n;i++){ for(int j=1;j<=m;j++){ dp[i][j]=abs(a[i-1]-b[j-1])+min(dp[i-1][j-1],min(dp[i][j-1],dp[i-1][j])); //cout<<dp[i][j]<<' '; } //cout<<endl; } return dp[n][m]; } for(int v:b){ st.insert(v); } ll ans=0; for(int x:a){ auto l=st.upper_bound(x-1); auto r=st.lower_bound(x); if(l!=st.begin()&&r!=st.end()){ l--; int y=*l,z=*r; if(abs(y-x)<abs(z-x)){ ans+=abs(y-x); st.erase(l); } else{ ans+=abs(z-x); st.erase(r); } } else if(l!=st.begin()){ l--; int y=*l; ans+=abs(y-x); st.erase(l); } else if(r!=st.end()){ int y=*r; ans+=abs(y-x); st.erase(r); } } for(int x:st){ auto l=st2.upper_bound(x-1); auto r=st2.lower_bound(x); if(l!=st2.begin()&&r!=st2.end()){ l--; int y=*l,z=*r; if(abs(y-x)<abs(z-x)){ ans+=abs(y-x); } else{ ans+=abs(z-x); } } else if(l!=st2.begin()){ l--; int y=*l; ans+=abs(y-x); } else if(r!=st2.end()){ int y=*r; ans+=abs(y-x); } } return ans; }
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