#include <iostream> #include <set> #include <vector> using namespace std; int main() { int m, n, d; int a, b; bool begin; vector<set<int>> drogi; set<int> miasta, analiza; cin >> n >> m >> d; drogi.resize(n+1); for (int i = 0;i < m;i++) { cin >> a >> b; drogi[a].insert(b); drogi[b].insert(a); } for (int i = 1;i <= n;i++) { begin = 0; if (drogi[i].size() >= d) miasta.insert(i); else { if (analiza.find(i) == analiza.end()) { for (set<int>::iterator it = drogi[i].begin(); it != drogi[i].end(); ++it) { drogi[*it].erase(i); if (*it < i) begin = 1; } analiza.insert(i); if (begin) { miasta.clear(); i = 1; } } } } if (miasta.size()>0) { cout << miasta.size() << endl; for (set<int>::iterator it = miasta.begin(); it != miasta.end(); ++it) { cout << *it << " "; } } else cout << "NIE"; return 0; }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | #include <iostream> #include <set> #include <vector> using namespace std; int main() { int m, n, d; int a, b; bool begin; vector<set<int>> drogi; set<int> miasta, analiza; cin >> n >> m >> d; drogi.resize(n+1); for (int i = 0;i < m;i++) { cin >> a >> b; drogi[a].insert(b); drogi[b].insert(a); } for (int i = 1;i <= n;i++) { begin = 0; if (drogi[i].size() >= d) miasta.insert(i); else { if (analiza.find(i) == analiza.end()) { for (set<int>::iterator it = drogi[i].begin(); it != drogi[i].end(); ++it) { drogi[*it].erase(i); if (*it < i) begin = 1; } analiza.insert(i); if (begin) { miasta.clear(); i = 1; } } } } if (miasta.size()>0) { cout << miasta.size() << endl; for (set<int>::iterator it = miasta.begin(); it != miasta.end(); ++it) { cout << *it << " "; } } else cout << "NIE"; return 0; } |