oj.uz

Submission #741731

# Submission time Handle Problem Language Result Execution time Memory
741731 2023-05-14T17:38:49 Z abcvuitunggio timeismoney (balkan11_timeismoney) C++17
100 / 100
 425 ms 644 KB 
#include <bits/stdc++.h>
#define int long long
#define pii pair <int, int>
#define fi first
#define se second
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;
pii 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;
pii calc(int a, int b){
    int t=0,c=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);
        t+=y*e[i].t;
        c+=y*e[i].c;
        if (y)
            v.push_back(e[i]);
    }
    if (mn>t*c){
        mn=t*c;
        q={t,c};
        res=v;
    }
    return {t,c};
}
void g(pii a, pii b){
    auto c=calc(a.se-b.se,b.fi-a.fi);
    if ((c.se-a.se)*(b.fi-a.fi)==(b.se-a.se)*(c.fi-a.fi))
        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 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 4 ms 596 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 340 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 3 ms 340 KB Output is correct
16 Correct 50 ms 396 KB Output is correct
17 Correct 51 ms 400 KB Output is correct
18 Correct 46 ms 340 KB Output is correct
19 Correct 415 ms 644 KB Output is correct
20 Correct 425 ms 644 KB Output is correct