test/cpv/aizu-cgl/cgl_3_a.cpp
| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | // competitive-verifier: PROBLEM https://onlinejudge.u-aizu.ac.jp/courses/library/4/CGL/all/CGL_3_A | ||
| 2 | #include "../../../src/geo2d/ds/po/lib.hpp" | ||
| 3 | |||
| 4 | using namespace tifa_libs; | ||
| 5 | using poly = polygon<double>; | ||
| 6 | |||
| 7 | 20 | int main() { | |
| 8 |
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20 | std::cin.tie(nullptr)->std::ios::sync_with_stdio(false); |
| 9 |
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20 | std::cout << std::fixed << std::setprecision(1); |
| 10 | u32 n; | ||
| 11 |
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20 | std::cin >> n; |
| 12 | 20 | poly p(n); | |
| 13 | 20 | std::cin >> p; | |
| 14 |
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20 | std::cout << p.area() << '\n'; |
| 15 | 20 | return 0; | |
| 16 | 20 | } | |
| 17 |