test/cpv/aizu-alds1/alds1_12_a.cpp
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| 1 | // competitive-verifier: PROBLEM https://onlinejudge.u-aizu.ac.jp/courses/lesson/1/ALDS1/all/ALDS1_12_A | ||
| 2 | #include "../../../src/graph/mst/kruskal/lib.hpp" | ||
| 3 | |||
| 4 | using namespace tifa_libs; | ||
| 5 | 6 | int main() { | |
| 6 |
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6 | std::cin.tie(nullptr)->std::ios::sync_with_stdio(false); |
| 7 | u32 n; | ||
| 8 |
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6 | std::cin >> n; |
| 9 | int x; | ||
| 10 | 6 | vec<edge_tu> edges; | |
| 11 |
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215 | flt_ (u32, i, 0, n) |
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13690 | flt_ (u32, j, 0, n) { |
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13481 | std::cin >> x; |
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13481 | if (i == j || !~x) continue; |
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9572 | edges.emplace_back(x, i, j); |
| 16 | } | ||
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6 | std::ranges::sort(edges); |
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6 | auto res = kruskal(edges, n); |
| 19 | 6 | u64 w = 0; | |
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215 | flt_ (u32, i, 0, n) |
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615 | for (auto [to, v] : res[i]) w += v; |
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6 | std::cout << w / 2 << '\n'; |
| 23 | 6 | return 0; | |
| 24 | 6 | } | |
| 25 |