Submission #660585

#	Time	Username	Problem	Language	Result	Execution time	Memory
660585		Banan	Wiring (IOI17_wiring)	C++17	13 / 100	71 ms	8480 KiB

wiring

#include "wiring.h"

#include <bits/stdc++.h>
using namespace std;

using ll = long long;
#define double long double
#define endl '\n'
#define sz(a) (int)a.size()
#define pb push_back
#define fs first
#define sc second
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
ll const INF = LONG_LONG_MAX;



long long min_total_length(std::vector<int> r, std::vector<int> b) {

    ll n=sz(r), m=sz(b);
    if(n>m){swap(n, m);swap(r, b);}
    set<ll, greater<>> decr;
    for(int i=0;i<m;i++)
    {
        decr.insert(b[i]);
    }
    map<int, bool> mark;
    ll ans=0;
    for(int i=0;i<n;i++)
    {
        auto it=decr.lower_bound(r[i]);
        if(it==decr.end()){it--;}
        ll v=(*it);
        ans+=abs(v-r[i]);
        decr.erase(v);
        mark[v]=1;
    }

    for(int i=0;i<m;i++)
    {
        if(!mark[b[i]])
        {
            int lo=0, hi=n-1, mid=(lo+hi)/2, ind1=-1;
            while(lo<=hi)
            {
                if(r[mid]<b[i]){ind1=mid;lo=mid+1;mid=(lo+hi)/2;}
                else{hi=mid-1;mid=(lo+hi)/2;}
            }
            lo=0, hi=n-1, mid=(lo+hi)/2;
            int ind2=-1;
            while(lo<=hi)
            {
                if(r[mid]>b[i]){ind2=mid;hi=mid-1;mid=(lo+hi)/2;}
                else{lo=mid+1;mid=(lo+hi)/2;}
            }
            if(ind1==-1){ans+=abs(r[ind2]-b[i]);}
            else if(ind2==-1){ans+=abs(r[ind1]-b[i]);}
            else{ans+=min(abs(r[ind2]-b[i]), abs(r[ind1]-b[i]));}
        }
    }

	return ans;
}

• Subtask 1: 0 / 7
• Subtask 2: 13 / 13
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45