結果
| 問題 |
No.1955 Not Prime
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-05-21 02:15:22 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 90 ms / 2,000 ms |
| コード長 | 3,771 bytes |
| コンパイル時間 | 2,269 ms |
| コンパイル使用メモリ | 212,784 KB |
| 最終ジャッジ日時 | 2025-01-29 12:31:44 |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 26 |
ソースコード
#line 1 "main.cpp"
#pragma region Macros
#include <bits/stdc++.h>
using namespace std;
template <class T> inline bool chmax(T &a, T b) {
if(a < b) {
a = b;
return 1;
}
return 0;
}
template <class T> inline bool chmin(T &a, T b) {
if(a > b) {
a = b;
return 1;
}
return 0;
}
#ifdef DEBUG
template <class T, class U>
ostream &operator<<(ostream &os, const pair<T, U> &p) {
os << '(' << p.first << ',' << p.second << ')';
return os;
}
template <class T> ostream &operator<<(ostream &os, const vector<T> &v) {
os << '{';
for(int i = 0; i < (int)v.size(); i++) {
if(i) { os << ','; }
os << v[i];
}
os << '}';
return os;
}
void debugg() { cerr << endl; }
template <class T, class... Args>
void debugg(const T &x, const Args &... args) {
cerr << " " << x;
debugg(args...);
}
#define debug(...) \
cerr << __LINE__ << " [" << #__VA_ARGS__ << "]: ", debugg(__VA_ARGS__)
#define dump(x) cerr << __LINE__ << " " << #x << " = " << (x) << endl
#else
#define debug(...) (void(0))
#define dump(x) (void(0))
#endif
struct Setup {
Setup() {
cin.tie(0);
ios::sync_with_stdio(false);
cout << fixed << setprecision(15);
}
} __Setup;
using ll = long long;
#define OVERLOAD3(_1, _2, _3, name, ...) name
#define ALL(v) (v).begin(), (v).end()
#define RALL(v) (v).rbegin(), (v).rend()
#define REP1(i, n) for(int i = 0; i < int(n); i++)
#define REP2(i, a, b) for(int i = (a); i < int(b); i++)
#define REP(...) OVERLOAD3(__VA_ARGS__, REP2, REP1)(__VA_ARGS__)
#define UNIQUE(v) sort(ALL(v)), (v).erase(unique(ALL(v)), (v).end())
#define SZ(v) ((int)(v).size())
const int INF = 1 << 30;
const ll LLINF = 1LL << 60;
constexpr int MOD = 1000000007;
constexpr int MOD2 = 998244353;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
void Case(int i) { cout << "Case #" << i << ": "; }
int popcount(int x) { return __builtin_popcount(x); }
ll popcount(ll x) { return __builtin_popcountll(x); }
#pragma endregion Macros
#line 1 "/Users/siro53/kyo-pro/compro_library/math/eratosthenes.hpp"
vector<bool> eratosthenes(int n) {
vector<bool> isp(n + 1, true);
isp[0] = isp[1] = false;
for(int i = 2; i * i <= n; i++) {
if(!isp[i]) continue;
for(int j = i+i; j <= n; j += i) isp[j] = false;
}
return isp;
}
#line 77 "main.cpp"
auto isp = eratosthenes(2000000);
#include <atcoder/twosat>
bool check(int a, int b) {
string s = to_string(a) + to_string(b);
return isp[stoi(s)];
}
int main() {
int N;
cin >> N;
vector<int> a(N), b(N);
atcoder::two_sat ts(N);
// xi = 0 -> a[i] : S, b[i] : T
// xi = 1 -> a[i] : T, b[i] : S
REP(i, N) {
cin >> a[i] >> b[i];
if(check(a[i], b[i]) and check(b[i], a[i])) {
cout << "No\n";
return 0;
}
if(!check(a[i], b[i]) and check(b[i], a[i])) {
ts.add_clause(i, 0, i, 0);
} else if(check(a[i], b[i]) and !check(b[i], a[i])) {
ts.add_clause(i, 1, i, 1);
}
}
REP(i, N) REP(j, i+1, N) {
// xi = 0, xj = 0
if(check(a[i], b[j]) or check(a[j], b[i])) {
ts.add_clause(i, 1, j, 1);
}
// xi = 0, xj = 1
if(check(a[i], a[j]) or check(b[j], b[i])) {
ts.add_clause(i, 1, j, 0);
}
// xi = 1, xj = 0
if(check(b[i], b[j]) or check(a[j], a[i])) {
ts.add_clause(i, 0, j, 1);
}
// xi = 1, xj = 1
if(check(b[i], a[j]) or check(b[j], a[i])) {
ts.add_clause(i, 0, j, 0);
}
}
auto ans = ts.satisfiable();
cout << (ans ? "Yes" : "No") << endl;
}