math/fast_modinv.hpp

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• Last update: 2021-09-12 23:20:08-04:00
• Include: #include "math/fast_modinv.hpp"

Depends on

• template.hpp

Code

#include "../template.hpp"
#pragma once

template <typename T> struct FastModInv {
    vector<T> inv;
    T mod;
    void init(int N, T _mod) {
        inv.assign(N+1); inv[1] = 1LL; mod = _mod;
        for (int i = 2; i <= N; i++)
            inv[i] = (mod - (mod / i) * inv[mod % i] % mod) % mod;
    }
    T mdiv(T x, T y) { return x * inv[y] % mod; }
};

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.10.6/x64/lib/python3.10/site-packages/onlinejudge_verify/documentation/build.py", line 71, in _render_source_code_stat
    bundled_code = language.bundle(stat.path, basedir=basedir, options={'include_paths': [basedir]}).decode()
  File "/opt/hostedtoolcache/Python/3.10.6/x64/lib/python3.10/site-packages/onlinejudge_verify/languages/cplusplus.py", line 187, in bundle
    bundler.update(path)
  File "/opt/hostedtoolcache/Python/3.10.6/x64/lib/python3.10/site-packages/onlinejudge_verify/languages/cplusplus_bundle.py", line 312, in update
    raise BundleErrorAt(path, i + 1, "#pragma once found in a non-first line")
onlinejudge_verify.languages.cplusplus_bundle.BundleErrorAt: math/fast_modinv.hpp: line 2: #pragma once found in a non-first line

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