test/cpv/aizu-grl/grl_3_c.cpp
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|---|---|---|---|
| 1 | // competitive-verifier: PROBLEM https://onlinejudge.u-aizu.ac.jp/courses/library/5/GRL/all/GRL_3_C | ||
| 2 | #include "../../../src/graph/scc/kosaraju/lib.hpp" | ||
| 3 | |||
| 4 | using namespace tifa_libs; | ||
| 5 | 24 | int main() { | |
| 6 |
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24 | std::cin.tie(nullptr)->std::ios::sync_with_stdio(false); |
| 7 | u32 n, m; | ||
| 8 |
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24 | std::cin >> n >> m; |
| 9 | 24 | alist g(n); | |
| 10 |
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104467 | for (u32 i = 0, u, v; i < m; ++i) { |
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104443 | std::cin >> u >> v; |
| 12 | 104443 | g.add_arc(u, v); | |
| 13 | } | ||
| 14 | 24 | kosaraju scc(g); | |
| 15 | u32 q; | ||
| 16 |
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24 | std::cin >> q; |
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389463 | for (u32 i = 0, u, v; i < q; ++i) { |
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389439 | std::cin >> u >> v; |
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389439 | std::cout << (scc.scc_id[u] == scc.scc_id[v]) << '\n'; |
| 20 | } | ||
| 21 | 24 | return 0; | |
| 22 | 24 | } | |
| 23 |