Submission #791861

#	Time	Username	Problem	Language	Result	Execution time	Memory
791861		Khizri	Wiring (IOI17_wiring)	C++17	0 / 100	1 ms	248 KiB

wiring

#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)
long long min_total_length(vector<int> a, vector<int> b) {
	set<int>st;
	set<int>st2;
	int n=a.size(),m=b.size();
	if(max(n,m)<=200){
        ll ans=INF;
        for(int i=0;i+n-1<b.size();i++){
            ll res=0;
            for(int j=0;j<i;j++){
                res+=abs(a[0]-b[i]);
            }
            int idx=i;
            for(int j=0;j<n;j++){
                res+=abs(a[j]-b[idx]);
                idx++;
            }
            while(idx<m){
                res+=abs(a.back()-b[idx]);
                idx++;
            }
            ans=min(ans,res);
        }
        return ans;
	}
	if(a.size()>b.size()) swap(a,b);
	for(int v:b){
        st.insert(v);
	}
	for(int v:a){
        st2.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;
}

Compilation message (stderr)

wiring.cpp: In function 'long long int min_total_length(std::vector<int>, std::vector<int>)':
wiring.cpp:21:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |         for(int i=0;i+n-1<b.size();i++){
      |                     ~~~~~^~~~~~~~~

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