test/cpv/aizu-grl/grl_1_b.cpp
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|---|---|---|---|
| 1 | // competitive-verifier: PROBLEM https://onlinejudge.u-aizu.ac.jp/courses/library/5/GRL/all/GRL_1_B | ||
| 2 | #include "../../../src/graph/ds/alist/lib.hpp" | ||
| 3 | #include "../../../src/graph/sp/bm/lib.hpp" | ||
| 4 | |||
| 5 | using namespace tifa_libs; | ||
| 6 | 40 | int main() { | |
| 7 |
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40 | std::cin.tie(nullptr)->std::ios::sync_with_stdio(false); |
| 8 | u32 n, m, r; | ||
| 9 |
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40 | std::cin >> n >> m >> r; |
| 10 | 40 | alist<i32> g(n); | |
| 11 |
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9261 | flt_ (u32, i, 0, m) { |
| 12 | u32 u, v; | ||
| 13 | i32 w; | ||
| 14 |
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9221 | std::cin >> u >> v >> w; |
| 15 | 9221 | g.add_arc(u, v, w); | |
| 16 | } | ||
| 17 | 40 | CEXP i32 INF = inf_v<i32>; | |
| 18 | 40 | auto d = bellman_ford(g, r, fn_0, INF); | |
| 19 |
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40 | if (!d) { |
| 20 |
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9 | std::cout << "NEGATIVE CYCLE\n"; |
| 21 | 9 | return 0; | |
| 22 | } | ||
| 23 |
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4559 | for (i32 i : d.value()) |
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4528 | if (i == INF) std::cout << "INF\n"; |
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4327 | else std::cout << i << '\n'; |
| 26 | 31 | return 0; | |
| 27 | 40 | } | |
| 28 |