Submission #501858

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
501858	2022-01-04 17:23:13	SirCovidThe19th	Fancy Fence (CEOI20_fancyfence)	C++17	100 / 100	172 ms	4164 KiB

fancyfence

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#include <bits/stdc++.h>
using namespace std; 
#define ll long long
const int md = 1e9 + 7;
struct mint{
  int v;
  mint() : v(0) {}
  mint(ll v_) : v(int(v_ % md)){ if (v < 0) v += md; }
  explicit operator int() const{ return v; }
  friend std::ostream& operator << (std::ostream& out, const mint& n){ return out << int(n); }
  friend std::istream& operator >> (std::istream& in, mint& n){ ll v_; in >> v_; n = mint(v_); return in; }
 
  friend bool operator == (const mint& a, const mint& b){ return a.v == b.v; }
  friend bool operator != (const mint& a, const mint& b){ return a.v != b.v; }
    friend bool operator < (const mint& a, const mint& b){ return a.v < b.v; }
    friend bool operator <= (const mint& a, const mint& b){ return a.v <= b.v; }
    friend bool operator > (const mint& a, const mint& b){ return a.v > b.v; }
  friend bool operator >= (const mint& a, const mint& b){ return a.v >= b.v; }
  mint& operator += (const mint& o){ ((v += o.v) >= md) ? v -= md : 0; return *this; }
  mint& operator -= (const mint& o){ ((v -= o.v) < 0) ? v += md : 0; return *this; }
  mint& operator *= (const mint& o){ v = int((ll)v * o.v % md); return *this; }
  mint& operator /= (const mint& o){ return (*this) *= inv(o); }
  mint operator - () const{ return mint(-v); }
  mint& operator ++ (){ return *this += 1; }
  mint& operator -- (){ return *this -= 1; }
 
 
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