# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1009326 | vjudge1 | timeismoney (balkan11_timeismoney) | C++17 | 2100 ms | 604 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
const int maxm = 100005, maxn = 205;
int n, m;
int x[maxm], y[maxm], t[maxm], c[maxm];
int in[maxm];
int parent[maxn], vel[maxn];
long long ans = 1e18, anst, ansm;
long long t_novi, m_novi;
double k1, k2;
vector <pair <int, int> > ans2, tr;
int comp (int a, int b){
if (k1 * t[a] + k2 * c[a] < k1 * t[b] + k2 * c[b]){
return 1;
}
return 0;
}
int find (int a){
if (parent[a] == a){
return a;
}
return parent[a] = find(parent[a]);
}
void unite (int p1, int p2){
if (vel[p1] > vel[p2]){
swap(p1, p2);
}
parent[p1] = p2;
vel[p2] += vel[p1];
vel[p1] = 0;
}
void mst (){
tr.clear();
for (int i = 0; i < m; i++){
in[i] = i;
}
sort(in, in + m, comp);
for (int i = 0; i < n; i++){
vel[i] = 1, parent[i] = i;
}
/*
for (int i = 0; i < m; i++){
cout << x[in[i]] << " " << y[in[i]] << " " << t[in[i]] << endl;
}
cout << endl;*/
t_novi = 0, m_novi = 0;
for (int i = 0; i < m; i++){
int p1 = find(x[in[i]]);
int p2 = find(y[in[i]]);
if (p1 != p2){
unite(p1, p2);
t_novi += t[in[i]];
m_novi += c[in[i]];
tr.push_back({x[in[i]], y[in[i]]});
}
}
}
void rek (int t1, int m1, int t2, int m2){
double tt1 = t1, tt2 = t2, mm1 = m1, mm2 = m2;
//cout << t1 << " " << m1 << " " << t2 << " " << m2 << endl;
double k = (tt1 - tt2) / (mm1 - mm2);
//cout << k << endl;
k1 = 1, k2 = -k;
mst();
//cout << t_novi << " " << m_novi << endl;
if ((t_novi == t1 and m_novi == m1) or (t_novi == t2 and m_novi == m2)){
if (t_novi * m_novi < ans){
ans = t_novi * m_novi;
anst = t_novi, ansm = m_novi;
ans2.clear();
for (int i = 0; i < tr.size(); i++){
ans2.push_back({tr[i].first, tr[i].second});
}
}
return;
}
rek(t1, m1, t_novi, m_novi);
rek(t_novi, m_novi, t2, m2);
}
int main (void){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
cin >> n >> m;
for (int i = 0; i < m; i++){
cin >> x[i] >> y[i] >> t[i] >> c[i];
}
k1 = 1, k2 = 0;
mst();
int t1 = t_novi;
int m1 = m_novi;
k1 = 0, k2 = 1;
mst();
int t2 = t_novi;
int m2 = m_novi;
//cout << t1 << " " << m1 << " " << t2 << " " << m2 << endl;
rek(t1, m1, t2, m2);
//cout << ans << "\n";
cout << anst << " " << ansm << endl;
for (int i = 0; i < ans2.size(); i++){
cout << ans2[i].first << " " << ans2[i].second << "\n";
}
return 0;
}
Compilation message (stderr)
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