oj.uz

Submission #741730

# Submission time Handle Problem Language Result Execution time Memory
741730 2023-05-14T17:35:05 Z abcvuitunggio timeismoney (balkan11_timeismoney) C++17
100 / 100
 436 ms 780 KB 
#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;
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;
    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
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 372 KB Output is correct
8 Correct 5 ms 720 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 3 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 47 ms 424 KB Output is correct
17 Correct 50 ms 340 KB Output is correct
18 Correct 47 ms 340 KB Output is correct
19 Correct 413 ms 724 KB Output is correct
20 Correct 436 ms 780 KB Output is correct