結果

問題 No.1047 Zero (Novice)
ユーザー Imperi_NightImperi_Night
提出日時 2020-05-08 21:32:49
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 3,468 bytes
コンパイル時間 1,466 ms
コンパイル使用メモリ 129,272 KB
最終ジャッジ日時 2025-01-10 08:12:56
ジャッジサーバーID
(参考情報)
judge5 / judge1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 17
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cctype>
#include <cstdint>
#include <cstdlib>
#include <cmath>
#include <complex>
#include <chrono>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <map>
#include <memory>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <vector>
#include <random>
#include <utility>
#include <limits>
#include <list>
/* template start */
#define rep(i, a, b) for (long long i = (a); (i) < (b); (i)++)
#define all(i) i.begin(), i.end()
#ifdef LOCAL
#define debug(...) std::cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif
void debug_out(){std::cerr<<std::endl;}
template<typename Head,typename... Tail>
void debug_out(Head h,Tail... t){
std::cerr<<" "<<h;
if(sizeof...(t)>0)std::cout<<" :";
debug_out(t...);
}
template <typename T1, typename T2>
std::ostream& operator<<(std::ostream& os, std::pair<T1, T2> pa) {
return os << pa.first << " " << pa.second;
}
template <typename T>
std::ostream& operator<<(std::ostream& os, std::vector<T> vec) {
for (std::size_t i = 0; i < vec.size(); i++)os << vec[i] << (i + 1 == vec.size() ? "" : " ");
return os;
}
template<typename T1,typename T2>
inline bool chmax(T1& a,T2 b){return a<b && (a=b,true);}
template<typename T1,typename T2>
inline bool chmin(T1& a,T2 b){return a>b && (a=b,true);}
long long pow_mod(long long a, long long b, long long mod=-1) {
if(b==0)return 1;
if ((a == 0)||(mod!=-1&&(a+mod)%mod==0))return 0;
long long x = 1;
while (b > 0) {
if (b & 1)x = (mod!=-1)?(x * a) % mod:x*a;
a = (mod!=-1)?(a * a) % mod:a*a;
b >>= 1;
}
return x;
}
template <std::uint_fast64_t Modulus> class modint {
using u64 = std::uint_fast64_t;
public:
u64 a;
constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {}
constexpr u64 &value() noexcept { return a; }
constexpr const u64 &value() const noexcept { return a; }
constexpr modint operator+(const modint rhs) const noexcept {
return modint(*this) += rhs;
}
constexpr modint operator-(const modint rhs) const noexcept {
return modint(*this) -= rhs;
}
constexpr modint operator*(const modint rhs) const noexcept {
return modint(*this) *= rhs;
}
constexpr modint operator/(const modint rhs) const noexcept {
return modint(*this) /= rhs;
}
constexpr modint &operator+=(const modint rhs) noexcept {
a += rhs.a;
if (a >= Modulus) {
a -= Modulus;
}
return *this;
}
constexpr modint &operator-=(const modint rhs) noexcept {
if (a < rhs.a) {
a += Modulus;
}
a -= rhs.a;
return *this;
}
constexpr modint &operator*=(const modint rhs) noexcept {
a = a * rhs.a % Modulus;
return *this;
}
constexpr modint &operator/=(modint rhs) noexcept {
u64 exp = Modulus - 2;
while (exp) {
if (exp % 2) {
*this *= rhs;
}
rhs *= rhs;
exp /= 2;
}
return *this;
}
};
/* template end */
using ll = long long;
using P=std::pair<long long,long long>;
int main() {
std::cin.tie(nullptr);
std::ios::sync_with_stdio(false);
ll a,b;
std::cin>>a>>b;
if(b==0){
std::cout<<1<<"\n";
return 0;
}
if(a==1){
std::cout<<-1<<"\n";
return 0;
}
if(a==-1){
std::cout<<2<<"\n";
return 0;
}
std::cout<<-1<<"\n";
return 0;
}
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