test/cpv/aizu-cgl/cgl_7_h.cpp
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|---|---|---|---|
| 1 | // competitive-verifier: ERROR 0.000001 | ||
| 2 | // competitive-verifier: PROBLEM https://onlinejudge.u-aizu.ac.jp/courses/library/4/CGL/all/CGL_7_H | ||
| 3 | #include "../../../src/geo2d/ains/poc/lib.hpp" | ||
| 4 | #include "../../../src/geo2d/ds/po/lib.hpp" | ||
| 5 | |||
| 6 | using namespace tifa_libs; | ||
| 7 | using poly = polygon<double>; | ||
| 8 | using circ = circle<double>; | ||
| 9 | |||
| 10 | 32 | int main() { | |
| 11 |
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32 | std::cin.tie(nullptr)->std::ios::sync_with_stdio(false); |
| 12 |
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32 | std::cout << std::fixed << std::setprecision(12); |
| 13 | u32 n; | ||
| 14 | double r; | ||
| 15 |
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32 | std::cin >> n >> r; |
| 16 | 32 | poly pl(n); | |
| 17 | 32 | std::cin >> pl; | |
| 18 |
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32 | std::cout << area_PoC(pl, {0, 0, r}) << '\n'; |
| 19 | 32 | return 0; | |
| 20 | 32 | } | |
| 21 |