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 "roads.h"
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for (int i = (a); i <= (b); i++)
#define repa(i,a,b) for (int i = (a); i >= (b); i--)
#define lli long long int
#define debugsl(a) cout << #a << " = " << a << ", "
#define debug(a) cout << #a << " = " << a << endl
#define MAX 100000
#define des first
#define w second
vector< pair<lli,lli> > hijos[MAX+2];
lli n,a,b,c,apu1,ind,aristas,resta,sum;
vector<lli> activos,inicios;
vector<pair<lli,lli> > orden;
vector<lli> grafo[MAX+2];
lli visitados[MAX+2];
std::vector <long long> minimum_closure_costs(int N, std::vector<int> U, std::vector<int> V, std::vector<int> W) {
vector<long long> res (N, 0);
n = N;
//asigna hijos
rep(i,0,n-2) {
a = U[i]+1;
b = V[i]+1;
c = W[i];
hijos[a].push_back({b,c});
hijos[b].push_back({a,c});
}
rep(i,1,n) orden.push_back({hijos[i].size(), i});
sort(orden.begin(), orden.end());
reverse(orden.begin(), orden.end());
apu1 = 0;
sum = 0;
repa(i,n-1,0) {
inicios.clear();
resta = 0;
while (apu1 < n && orden[apu1].first > i) {
ind = orden[apu1].second;
visitados[ind] = i;
activos.push_back(ind);
inicios.push_back(ind);
for (auto h : hijos[ind]) {
if (hijos[h.des].size() > i) {
if (visitados[h.des] > i) {
visitados[h.des] = i;
grafo[h.des].clear();
}
grafo[ind].push_back(h.des);
grafo[h.des].push_back(ind);
aristas++;
}
if (hijos[h.des].size() == i+1) resta++;
}
apu1++;
}
resta /= 2;
aristas -= resta;
sum += activos.size();
res[i] = sum - aristas;
}
return res;
}
Compilation message (stderr)
roads.cpp: In function 'std::vector<long long int> minimum_closure_costs(int, std::vector<int>, std::vector<int>, std::vector<int>)':
roads.cpp:53:41: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
53 | if (hijos[h.des].size() > i) {
| ~~~~~~~~~~~~~~~~~~~~^~~
roads.cpp:63:41: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
63 | if (hijos[h.des].size() == i+1) resta++;
| ~~~~~~~~~~~~~~~~~~~~^~~~~~
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