結果
| 問題 |
No.1747 Many Formulae 2
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-11-19 21:26:01 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 3 ms / 2,000 ms |
| コード長 | 4,936 bytes |
| コンパイル時間 | 1,904 ms |
| コンパイル使用メモリ | 202,304 KB |
| 最終ジャッジ日時 | 2025-01-25 19:56:06 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 19 |
ソースコード
#line 1 "a.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 < (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())
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 "/home/siro53/kyo-pro/compro_library/math/pollad-rho.hpp"
struct FastFactorize {
ll mul(ll a, ll b, ll c) { return (__int128)a * b % c; }
ll power(ll a, ll b, ll mod) {
ll res = 1;
while(b) {
if(b & 1) { res = mul(res, a, mod); }
a = mul(a, a, mod);
b >>= 1;
}
return res;
}
bool isPrime(ll n) {
if(!(n & 1) && n != 2) { return false; }
ll d = n - 1;
int s = __builtin_ctzll(d);
d >>= s;
vector<int> A;
if(n <= 1000000000) {
A = {2, 3, 5, 7};
} else {
A = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37};
}
for(int a : A) {
ll p = power(a, d, n);
int i = s;
while(p != 1 && p != n - 1 && a % n && (--i)) { p = mul(p, p, n); }
if(p != n - 1 && i != s) { return false; }
}
return true;
}
ll rho(ll n) {
auto f = [&](ll a) { return mul(a, a, n) + 1; };
ll x = 0, y = 0, p = 2, q;
int i = 1, t = 0;
while((t++) % 40 || gcd(p, n) == 1) {
if(x == y) {
x = ++i;
y = f(x);
}
if(q = mul(p, abs(y - x), n)) { p = q; }
x = f(x);
y = f(f(y));
}
return gcd(p, n);
}
vector<ll> factor(ll n) {
if(n == 1) { return {}; }
if(isPrime(n)) { return {n}; }
ll a = rho(n);
assert(a != n && a != 1);
auto l = factor(a), r = factor(n / a);
l.insert(l.end(), r.begin(), r.end());
return l;
}
// 未verify, バグってるかも
vector<ll> divisor(ll n) {
vector<ll> res;
auto v = factor(n);
map<ll, int> cnt;
for(const ll &a : v) cnt[a]++;
sort(ALL(v));
v.erase(unique(ALL(v)), v.end());
int sz = int(v.size());
auto dfs = [&](auto &&dfs, int d, ll now) -> void {
if(d == sz) {
res.emplace_back(now);
return;
}
ll nxt = now;
dfs(dfs, d + 1, nxt);
REP(i, cnt[v[d]]) {
nxt *= v[d];
dfs(dfs, d + 1, nxt);
}
};
dfs(dfs, 0, 1);
sort(ALL(res));
return res;
}
};
#line 76 "a.cpp"
FastFactorize f;
int main() {
string s;
cin >> s;
int N = s.size();
ll ans = 0;
REP(mask, 1 << (N-1)) {
ll sum = 0;
ll now = s[0] - '0';
REP(i, 1, N) {
if(mask >> (i-1) & 1) {
sum += now;
now = s[i] - '0';
} else {
now = now * 10 + (s[i] - '0');
}
}
sum += now;
debug(sum);
if(sum >= 2 and f.isPrime(sum)) ans++;
}
cout << ans << endl;
}