結果
| 問題 |
No.726 Tree Game
|
| コンテスト | |
| ユーザー |
onakaT_Titai
|
| 提出日時 | 2018-08-24 22:32:50 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,787 bytes |
| コンパイル時間 | 923 ms |
| コンパイル使用メモリ | 95,252 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-23 08:11:36 |
| 合計ジャッジ時間 | 1,732 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 24 WA * 1 |
ソースコード
#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <vector>
#include <algorithm>
#include <numeric>
#include <map>
#include <set>
#include <stack>
#include <queue>
#include <deque>
#include <functional>
#include <cctype>
#include <list>
#include <limits>
//#include <boost/multiprecision/cpp_int.hpp>
#define BIT(a) (1 << (a))
#define EPS (1e-10)
using namespace std;
//using namespace boost::multiprecision;
const long long MOD = 1000000007;
const int COUNTER_CLOCKWISE = 1;
const int CLOCKWISE = -1;
const int ONLINE_BACK = 2;
const int ONLINE_FRONT = -2;
const int ON_SEGMENT = 0;
class DisjointSet{
public:
vector<int> rank, p;
DisjointSet(){}
DisjointSet(int size){
rank.resize(size, 0);
p.resize(size, 0);
for (int i = 0; i < size; i++) makeSet(i);
}
void makeSet(int x){
p[x] = x;
rank[x] = 0;
}
bool same(int x, int y){
return findSet(x) == findSet(y);
}
void unite(int x, int y){
link(findSet(x), findSet(y));
}
void link(int x, int y){
if (rank[x] > rank[y]){
p[y] = x;
}else{
p[x] = y;
if (rank[x] == rank[y]){
rank[y]++;
}
}
}
int findSet(int x){
if (x != p[x]){
p[x] = findSet(p[x]);
}
return p[x];
}
};
class Point{
public:
double x, y;
Point(double x = 0, double y = 0): x(x), y(y) {}
Point operator+(Point p){return Point(x + p.x, y + p.y);}
Point operator-(Point p){return Point(x - p.x, y - p.y);}
Point operator*(double a){return Point(a * x, a * y);}
Point operator/(double a){return Point(x / a, y / a);}
bool operator < (const Point &p) const {
return y != p.y ? y < p.y : x < p.x;
}
double norm(){return x * x + y * y;}
};
typedef Point Vector;
typedef vector<Vector> Polygon;
double cross(Vector a, Vector b){
return a.x*b.y - a.y*b.x;
}
double dot(Vector a, Vector b){
return a.x * b.x + a.y * b.y;
}
int ccw(Point p0, Point p1, Point p2){
Vector a = p1 - p0;
Vector b = p2 - p0;
if (cross(a, b) > EPS)return COUNTER_CLOCKWISE;
if (cross(a, b) > -EPS)return CLOCKWISE;
if (dot(a, b) < -EPS)return ONLINE_BACK;
if (a.norm() < b.norm())return ONLINE_FRONT;
return ON_SEGMENT;
}
Polygon andrewScan(Polygon s){
Polygon u, l;
if (s.size() < 3) return s;
sort(s.begin(), s.end());
u.push_back(s[0]);
u.push_back(s[1]);
l.push_back(s[s.size()-1]);
l.push_back(s[s.size()-2]);
for (size_t i = 2; i < s.size(); i++){
for (size_t n = u.size(); n >= 2 && ccw(u[n-2], u[n-1], s[i]) == COUNTER_CLOCKWISE; n--){
u.pop_back();
}
u.push_back(s[i]);
}
for (int i = (int)s.size() - 3; i >= 0; i--){
for (size_t n = l.size(); n >= 2 && ccw(l[n-2], l[n-1], s[i]) == COUNTER_CLOCKWISE; n--){
l.pop_back();
}
l.push_back(s[i]);
}
reverse(l.begin(), l.end());
for (size_t i = u.size() - 2; i >= 1; i--) l.push_back(u[i]);
return l;
}
long long mod_pow(long long x, long long n){
long long res = 1;
for(int i = 0;i < 60; i++){
if(n >> i & 1) res = res * x % MOD;
x = x * x % MOD;
}
return res;
}
bool IsPrime(long long num)
{
if (num < 2) return false;
else if (num == 2) return true;
else if (num % 2 == 0) return false; // 偶数はあらかじめ除く
double sqrtNum = sqrt(num);
for (long long i = 3; i <= sqrtNum; i += 2)
{
if (num % i == 0)
{
// 素数ではない
return false;
}
}
// 素数である
return true;
}
long long A, B;
int check(void){
long long na;
long long nb;
for (long long i = A;; i++){
na = i - 1;
if (IsPrime(i)){
break;
}
}
for (long long i = B;; i++){
nb = i - 1;
if (IsPrime(i)){
break;
}
}
if (((na - A) + (nb - B)) % 2) return 1;
else return 0;
}
int main(){
int flag = 0;
cin >> A >> B;
if (IsPrime(A) && IsPrime(B)){
cout << "Second" << endl;
return 0;
}
if (IsPrime(A)){
flag = 1;
A++;
}
if (IsPrime(B)){
flag = 1;
B++;
}
if (flag){
if(check()) cout << "Second" << endl;
else cout << "First" << endl;
}else{
if(check()) cout << "First" << endl;
else cout << "Second" << endl;
}
return 0;
}
onakaT_Titai