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- #include <vector>
- #include <iostream>
- using namespace std;
- // хранение графа ч/з списки смежности
- int main() {
- int n,m;
- cin >> n >> m;
- vector<vector<int> > v(n);
- for (int i = 0; i < m; i++) {
- int s,f;
- cin >> s >> f;
- v[s].push_back(f);
- v[f].push_back(s);
- }
- for (int i = 0; i < n; i++){
- for (int j = 0; j < v[i].size(); j++)
- cout << v[i][j] << " ";
- cout << endl;
- }
- return 0;
- }
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