Submission #476986

#	Time	Username	Problem	Language	Result	Execution time	Memory
476986		Jasiekstrz	timeismoney (balkan11_timeismoney)	C++17	50 / 100	2085 ms	58444 KiB

timeismoney

#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
const int N=200;
const int C=255;
const int M=1e4;
struct Edge
{
	int a,b;
	long long c1,c2;
};
Edge edg[M+10];
int fau[N+10];
long long ans1=N*C+7,ans2=N*C+7;
vector<pair<int,int>> ans;
void clr_fau(int n)
{
	for(int i=0;i<=n;i++)
		fau[i]=i;
	return;
}
int f(int x)
{
	return (fau[x]==x ? x:fau[x]=f(fau[x]));
}
void u(int x,int y)
{
	fau[f(x)]=f(y);
	return;
}
pair<long long,long long> mst(int n,int m,long long k1,long long k2)
{
	long long w1=0,w2=0;
	vector<pair<int,int>> in_mst;
	clr_fau(n);
	sort(edg+1,edg+m+1,[k1,k2](Edge e1,Edge e2){ return e1.c1*k1+e1.c2*k2<e2.c1*k1+e2.c2*k2; });
	for(int ei=1;ei<=m;ei++)
	{
		auto e=edg[ei];
		if(f(e.a)!=f(e.b))
		{
			u(e.a,e.b);
			w1+=e.c1;
			w2+=e.c2;
			in_mst.emplace_back(e.a,e.b);
		}
	}
	if(w1*w2<ans1*ans2)
	{
		ans1=w1;
		ans2=w2;
		ans=in_mst;
	}
	//cerr<<k1<<" "<<k2<<" -> "<<w1<<" "<<w2<<"\n";
	return {w1,w2};
}
void solve(int n,int m,pair<long long,long long> p1,pair<long long,long long> p2)
{
	auto p3=mst(n,m,p2.se-p1.se,p1.fi-p2.fi);
	if(p3==p1 || p3==p2)
		return;
	solve(n,m,p1,p3);
	solve(n,m,p3,p2);
	return;
}
int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
	int n,m;
	cin>>n>>m;
	for(int i=1;i<=m;i++)
		cin>>edg[i].a>>edg[i].b>>edg[i].c1>>edg[i].c2;
	solve(n,m,mst(n,m,0,1),mst(n,m,1,0));
	cout<<ans1<<" "<<ans2<<"\n";
	for(auto [a,b]:ans)
		cout<<a<<" "<<b<<"\n";
	return 0;
}

• Subtask 1: 50 / 100