제출 #1099388

#제출 시각아이디문제언어결과실행 시간메모리
1099388mihaihvhCircle Passing (EGOI24_circlepassing)C++14
0 / 100
2078 ms95572 KiB
#include <iostream> #include <set> #include <queue> #include <vector> using namespace std; vector<set<int>> v(1000000); int n, m, q; int M; void bf(int k, int l) { //int viz[20001]{0}; vector<int> viz(2*n); queue<int> q; viz[k] = 1; q.push(k); bool E = 1; while (!q.empty() && E) { for (auto m : v[q.front()]) { if (!viz[m]) { q.push(m); viz[m] = viz[q.front()] + 1; if (m == l) E = 0; } } q.pop(); } cout << viz[l] - 1 << '\n'; } int main() { cin >> n >> m >> q; for (int i = 0; i < m; ++i) { cin >> M; v[M].insert(M+n); v[M+n].insert(M); } for (int i = 0; i < 2*n; ++i) { if (i == 0) v[i].insert(2*n-1); if (i == 2*n-1) v[i].insert(0); if (i < 2*n-1) v[i].insert(i+1); if (i > 0) v[i].insert(i-1); } for (int i = 0; i < q; ++i) { for (int j = 0; j < m; ++j) { int a, b; cin >> a >> b; bf(a, b); } } return 0; }
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