제출 #520036

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
520036	2022-01-28 07:57:15	KoD	Zapina (COCI20_zapina)	C++17	110 / 110	87 ms	320 KiB

zapina

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#include <bits/stdc++.h>
using std::vector;
using std::array;
using std::pair;
using std::tuple;
constexpr int MOD = 1000000007;
struct Fp {
    int x;
    Fp(int x = 0) : x(x) {}
    Fp& operator+=(const Fp& t) {
        if ((x += t.x) >= MOD) x -= MOD;
        return *this;
    }
    Fp& operator-=(const Fp& t) {
        if ((x -= t.x) < 0) x += MOD;
        return *this;
    }
    Fp& operator*=(const Fp& t) {
        x = (long long)x * t.x % MOD;
        return *this;
    }
    Fp operator+(const Fp& t) const {
        return Fp(*this) += t;
    }
    Fp operator-(const Fp& t) const {
        return Fp(*this) -= t;
    }
 
 
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