test/cpv/yukicoder/0448.cpp
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| 1 | // competitive-verifier: PROBLEM https://yukicoder.me/problems/448 | ||
| 2 | #include "../../../src/nt/crt/mod/lib.hpp" | ||
| 3 | |||
| 4 | using namespace tifa_libs; | ||
| 5 | 25 | int main() { | |
| 6 |
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25 | std::cin.tie(nullptr)->std::ios::sync_with_stdio(false); |
| 7 | u32 n; | ||
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25 | std::cin >> n; |
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75 | vecuu r(n), m(n); |
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19743 | flt_ (u32, i, 0, n) std::cin >> r[i] >> m[i]; |
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25 | auto res = crt_mod(r, m, 1'000'000'007); |
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25 | if (!res) { |
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3 | std::cout << "-1\n"; |
| 14 | 3 | return 0; | |
| 15 | } | ||
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22 | std::cout << ((usz)std::ranges::count(r, 0) == n ? res->second : res->first) << '\n'; |
| 17 | 22 | return 0; | |
| 18 | 25 | } | |
| 19 |