Submission #741725

#	Time	Username	Problem	Language	Result	Execution time	Memory
741725		abcvuitunggio	timeismoney (balkan11_timeismoney)	C++17	100 / 100	445 ms	796 KiB

timeismoney

#include <bits/stdc++.h>
#define int long long
using namespace std;
struct edge{
    int u,v,t,c;
}e[10001];
int n,m,p[201],sz[201],mn=1e18,rest,last;
vector <edge> v,res;
pair <int, int> q;
int f(int i){
    return (p[i]==i?i:p[i]=f(p[i]));
}
int unite(int i, int j){
    i=f(i);
    j=f(j);
    if (i==j)
        return 0;
    if (sz[i]<sz[j])
        swap(i,j);
    p[j]=i;
    sz[i]+=sz[j];
    return 1;
}
int A,B;
pair <int, int> calc(int a, int b){
    int time=0,cost=0;
    A=a,B=b;
    for (int i=0;i<n;i++){
        p[i]=i;
        sz[i]=1;
    }
    sort(e+1,e+m+1,[](edge x, edge y){return x.t*A+x.c*B<y.t*A+y.c*B;});
    v.clear();
    for (int i=1;i<=m;i++){
        int y=unite(e[i].u,e[i].v);
        time+=y*e[i].t;
        cost+=y*e[i].c;
        if (y)
            v.push_back(e[i]);
    }
    if (mn>time*cost){
        mn=time*cost;
        q={time,cost};
        res=v;
    }
    return {time,cost};
}
void g(pair <int, int> a, pair <int, int> b){
    auto c=calc(a.second-b.second,b.first-a.first);
    if ((c.second-a.second)*(b.first-a.first)==(b.second-a.second)*(c.first-a.first))
        return;
    g(a,c);
    g(c,b);
}
int32_t main(){
    ios_base::sync_with_stdio(NULL);cin.tie(nullptr);
    cin >> n >> m;
    for (int i=1;i<=m;i++){
        cin >> e[i].u >> e[i].v >> e[i].t >> e[i].c;
        last+=e[i].t;
    }
    sort(e+1,e+m+1,[](edge a, edge b){return a.c<b.c;});
    g(calc(1,0),calc(0,1));
    cout << q.first << ' ' << q.second << '\n';
    for (auto e:res)
        cout << e.u << ' ' << e.v << '\n';
}

• Subtask 1: 100 / 100