結果

問題 No.279 木の数え上げ
ユーザー not_522
提出日時 2020-01-02 23:53:43
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 56 ms / 2,000 ms
コード長 21,699 bytes
コンパイル時間 1,338 ms
コンパイル使用メモリ 115,064 KB
最終ジャッジ日時 2025-01-08 15:55:37
ジャッジサーバーID
(参考情報)
judge3 / judge4
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ファイルパターン 結果
other AC * 21
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// This is free and unencumbered software released into the public domain.
// Anyone is free to copy, modify, publish, use, compile, sell, or
// distribute this software, either in source code form or as a compiled
// binary, for any purpose, commercial or non-commercial, and by any
// means.
// In jurisdictions that recognize copyright laws, the author or authors
// of this software dedicate any and all copyright interest in the
// software to the public domain. We make this dedication for the benefit
// of the public at large and to the detriment of our heirs and
// successors. We intend this dedication to be an overt act of
// relinquishment in perpetuity of all present and future rights to this
// software under copyright law.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
// For more information, please refer to <http://unlicense.org>
/****************/
/* template.hpp */
/****************/
#include <algorithm>
#include <cassert>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits>
using std::cerr;
using std::cout;
using std::endl;
using std::max;
using std::min;
using std::swap;
struct BoolName : std::numpunct<char> {
std::string t, f;
BoolName(std::string t, std::string f) : t(t), f(f) {}
std::string do_truename() const { return t; }
std::string do_falsename() const { return f; }
};
void setBoolName(std::string t, std::string f) {
cout.imbue(std::locale(cout.getloc(), new BoolName(t, f)));
}
struct Initializer {
Initializer() {
cout << std::fixed << std::setprecision(15) << std::boolalpha;
setBoolName("Yes", "No");
}
} initializer;
struct Input {
bool eof;
Input() : eof(false) {}
operator char() {
char v;
this->eof = (std::scanf("%c", &v) != 1);
return v;
}
operator int() {
int v;
this->eof = (std::scanf("%d", &v) != 1);
return v;
}
operator long() {
long v;
this->eof = (std::scanf("%ld", &v) != 1);
return v;
}
operator long long() {
long long v;
this->eof = (std::scanf("%lld", &v) != 1);
return v;
}
operator unsigned int() {
unsigned int v;
this->eof = (std::scanf("%u", &v) != 1);
return v;
}
operator unsigned long() {
unsigned long v;
this->eof = (std::scanf("%lu", &v) != 1);
return v;
}
operator unsigned long long() {
unsigned long long v;
this->eof = (std::scanf("%llu", &v) != 1);
return v;
}
operator double() {
double v;
this->eof = (std::scanf("%lf", &v) != 1);
return v;
}
operator long double() {
long double v;
this->eof = (std::scanf("%Lf", &v) != 1);
return v;
}
void ignore() const { getchar(); }
} in;
template <typename T> T abs(T a) { return a >= 0 ? a : -a; }
template <typename T, typename S> bool chmin(T &a, const S &b) {
return a > b ? a = b, true : false;
}
template <typename T, typename S> bool chmax(T &a, const S &b) {
return a < b ? a = b, true : false;
}
template <typename T, typename S> std::function<S(T)> cast() {
return [](const T &t) { return static_cast<S>(t); };
}
template <typename T> T copy(const T &a) { return T(a); }
class ZeroPadding {
public:
ZeroPadding(int n) : n(n) {}
int n;
};
std::ostream &operator<<(std::ostream &os, const ZeroPadding &z) {
os << std::setw(z.n) << std::setfill('0');
return os;
}
template <typename T> constexpr T inf() {
return std::numeric_limits<T>::max() / 2 - 1;
}
/*************/
/* tuple.hpp */
/*************/
#include <tuple>
template <typename... T> class Tuple : public std::tuple<T...> {
public:
Tuple(Input &in) : std::tuple<T...>() { (void)in; }
};
template <typename T, typename... S>
class Tuple<T, S...> : public std::tuple<T, S...> {
public:
Tuple() : std::tuple<T, S...>() {}
Tuple(T t, S... s) : std::tuple<T, S...>(t, s...) {}
Tuple(const std::tuple<T, S...> &t) : std::tuple<T, S...>(t) {}
Tuple(Input &in) {
auto a = std::tuple<T>(in);
std::tuple<S...> b = Tuple<S...>(in);
std::tuple<T, S...> c = std::tuple_cat(a, b);
*this = c;
}
template <int n> auto &get() { return std::get<n>(*this); }
template <int n> const auto &get() const { return std::get<n>(*this); }
};
template <typename... T> Tuple<T...> makeTuple(const T &... args) {
return Tuple<T...>(args...);
}
namespace std {
template <typename... T>
class tuple_size<Tuple<T...>>
: public std::integral_constant<size_t, sizeof...(T)> {};
template <std::size_t I, typename... T> class tuple_element<I, Tuple<T...>> {
public:
using type = tuple_element_t<I, std::tuple<T...>>;
};
} // namespace std
/*****************/
/* container.hpp */
/*****************/
#include <vector>
template <typename T> class Container : public T {
private:
using S = typename T::value_type;
using Itr = typename T::iterator;
public:
Container() : T() {}
Container(int n) : T(n) {}
Container(int n, S s) : T(n, s) {}
template <typename Itr> Container(Itr first, Itr last) : T(first, last) {}
Container(const std::initializer_list<S> &v) : T(v) {}
Container(int n, Input &in) {
std::vector<S> v(n);
for (auto &i : v) {
i = in;
}
*this = Container<T>(v.begin(), v.end());
}
S max() const { return *std::max_element(this->begin(), this->end()); }
template <typename Function> auto max(Function func) const {
std::vector<std::pair<decltype(func(S())), S>> res;
for (const auto &i : *this) {
res.emplace_back(func(i), i);
}
return std::max_element(res.begin(), res.end())->second;
}
S min() const { return *std::min_element(this->begin(), this->end()); }
Tuple<S, S> minmax() const {
auto itrs = std::minmax_element(this->begin(), this->end());
return Tuple<S, S>(*itrs.first, *itrs.second);
}
template <typename Function> auto min(Function func) const {
std::vector<std::pair<decltype(func(S())), S>> res;
for (const auto &i : *this) {
res.emplace_back(func(i), i);
}
return std::min_element(res.begin(), res.end())->second;
}
int argmax() const {
return std::distance(std::max_element(this->begin(), this->end()),
this->begin());
}
int argmin() const {
return std::distance(std::min_element(this->begin(), this->end()),
this->begin());
}
int find(const S &a) const {
return std::distance(std::find(this->begin(), this->end(), a),
this->begin());
}
bool contains(const S &a) const {
return std::find(this->begin(), this->end(), a) != this->end();
}
int size() const { return T::size(); }
std::pair<Itr, Itr> equal_range(const S &a) {
return std::equal_range(this->begin(), this->end(), a);
}
template <typename Function> bool all_of(Function func) const {
return std::all_of(this->begin(), this->end(), func);
}
template <typename Function> bool any_of(Function func) const {
return std::any_of(this->begin(), this->end(), func);
}
template <typename Function> bool none_of(Function func) const {
return std::none_of(this->begin(), this->end(), func);
}
int count(const S &s) const {
return std::count(this->begin(), this->end(), s);
}
bool is_sorted() const { return std::is_sorted(this->begin(), this->end()); }
void output(std::string sep = "\n", std::string end = "\n") const {
bool first = true;
for (const auto &i : *this) {
if (!first) {
cout << sep;
}
first = false;
cout << i;
}
cout << end;
}
};
/***********/
/* map.hpp */
/***********/
#include <map>
template <typename T, typename S> class Map : public Container<std::map<T, S>> {
public:
Map() : Container<std::map<T, S>>() {}
bool contains(const T &a) const { return this->count(a) != 0; }
int count(const T &t) const { return this->count(t); }
};
/***************/
/* ordered.hpp */
/***************/
template <typename T> class Ordered {
public:
template <typename V> bool operator==(const V &v) const {
return !(static_cast<T>(v) < static_cast<const T &>(*this) ||
static_cast<const T &>(*this) < static_cast<T>(v));
}
template <typename V> bool operator!=(const V &v) const {
return static_cast<T>(v) < static_cast<const T &>(*this) ||
static_cast<const T &>(*this) < static_cast<T>(v);
}
template <typename V> bool operator>(const V &v) const {
return static_cast<T>(v) < static_cast<const T &>(*this);
}
template <typename V> bool operator<=(const V &v) const {
return !(static_cast<T>(v) < static_cast<const T &>(*this));
}
template <typename V> bool operator>=(const V &v) const {
return !(static_cast<const T &>(*this) < static_cast<T>(v));
}
};
/**************/
/* vector.hpp */
/**************/
#include <numeric>
template <typename T>
class Vector : public Container<std::vector<T>>, public Ordered<Vector<T>> {
public:
Vector() = default;
Vector(const Vector<T> &v) = default;
Vector(int n) : Container<std::vector<T>>(n) {}
Vector(int n, T t) : Container<std::vector<T>>(n, t) {}
template <typename Itr>
Vector(Itr first, Itr last) : Container<std::vector<T>>(first, last) {}
Vector(const std::initializer_list<T> &v) : Container<std::vector<T>>(v) {}
Vector(int n, Input &in) : Container<std::vector<T>>(n, in) {}
Vector &operator+=(const Vector &v) {
if (this->size() < v.size()) {
this->resize(v.size());
}
for (int i = 0; i < v.size(); ++i) {
(*this)[i] += v[i];
}
return *this;
}
Vector &operator+=(const T &v) {
for (auto &i : *this) {
i += v;
}
return *this;
}
Vector &operator-=(const Vector &v) {
if (this->size() < v.size()) {
this->resize(v.size());
}
for (int i = 0; i < v.size(); ++i) {
(*this)[i] -= v[i];
}
return *this;
}
Vector &operator-=(const T &v) {
for (auto &i : *this) {
i -= v;
}
return *this;
}
Vector &operator*=(const Vector &v) {
for (int i = 0; i < this->size(); ++i) {
(*this)[i] *= v[i];
}
return *this;
}
Vector &operator*=(const T &v) {
for (auto &i : *this) {
i *= v;
}
return *this;
}
Vector &operator/=(const Vector &v) {
for (int i = 0; i < this->size(); ++i) {
(*this)[i] /= v[i];
}
return *this;
}
Vector &operator/=(const T &v) {
for (auto &i : *this) {
i /= v;
}
return *this;
}
Vector &operator%=(const Vector &v) {
for (int i = 0; i < this->size(); ++i) {
(*this)[i] %= v[i];
}
return *this;
}
Vector &operator%=(const T &v) {
for (auto &i : *this) {
i %= v;
}
return *this;
}
Vector operator+(const Vector &v) const { return Vector(*this) += v; }
Vector operator+(const T &v) const { return Vector(*this) += v; }
Vector operator-(const Vector &v) const { return Vector(*this) -= v; }
Vector operator-(const T &v) const { return Vector(*this) -= v; }
Vector operator*(const Vector &v) const { return Vector(*this) *= v; }
Vector operator*(const T &v) const { return Vector(*this) *= v; }
Vector operator/(const Vector &v) const { return Vector(*this) /= v; }
Vector operator/(const T &v) const { return Vector(*this) /= v; }
Vector operator%(const Vector &v) const { return Vector(*this) %= v; }
Vector operator%(const T &v) const { return Vector(*this) %= v; }
bool operator<(const Vector &v) const {
if (this->size() != v.size()) {
return this->size() < v.size();
}
for (int i = 0; i < this->size(); ++i) {
if ((*this)[i] != v[i]) {
return (*this)[i] < v[i];
}
}
return false;
}
Vector operator-() const { return *this * -1; }
T inner_product(const Vector<T> &v) const {
return std::inner_product(this->begin(), this->end(), v.begin(), T(0));
}
Vector<T> &partial_sort(int k, bool reverse = false) {
if (!reverse) {
std::partial_sort(this->begin(), this->begin() + k, this->end());
} else {
std::partial_sort(this->begin(), this->begin() + k, this->end(),
std::greater<T>());
}
return *this;
}
Vector<T> &sort() {
std::sort(this->begin(), this->end());
return *this;
}
template <typename Function> Vector<T> &sort(Function func) {
std::sort(this->begin(), this->end(), func);
return *this;
}
Vector<T> &rsort() {
std::sort(this->rbegin(), this->rend());
return *this;
}
Vector<int> argsort() const {
Vector<Tuple<T, int>> v;
for (int i = 0; i < this->size(); ++i) {
v.emplace_back((*this)[i], i);
}
v.sort();
auto f = [](const Tuple<T, int> &t) { return t.template get<1>(); };
return v.transform(f);
}
Vector<T> &nth_element(int n, bool reverse = false) {
if (!reverse) {
std::nth_element(this->begin(), this->begin() + n, this->end());
} else {
std::nth_element(this->begin(), this->begin() + n, this->end(),
std::greater<T>());
}
return *this;
}
Vector<T> subvector(int a) const {
return Vector<T>(this->begin(), this->begin() + a);
}
Vector<T> subvector(int a, int b) const {
return Vector<T>(this->begin() + a, this->begin() + b);
}
template <typename Function> auto transform(Function func) const {
Vector<decltype(func(T()))> res;
std::transform(this->begin(), this->end(), std::back_inserter(res), func);
return res;
}
Vector<T> partial_sum() const {
Vector<T> res;
std::partial_sum(this->begin(), this->end(), std::back_inserter(res));
return res;
}
template <typename Function> Vector<T> partial_sum(Function func) const {
Vector<T> res;
std::partial_sum(this->begin(), this->end(), std::back_inserter(res), func);
return res;
}
Vector<T> &reverse() {
std::reverse(this->begin(), this->end());
return *this;
}
template <typename Function> int count_if(Function func) const {
return std::count_if(this->begin(), this->end(), func);
}
Vector<T> adjacent_difference() const {
Vector<T> res;
std::adjacent_difference(this->begin(), this->end(),
std::back_inserter(res));
return res;
}
T lower_bound(T t) const {
return std::lower_bound(this->begin(), this->end(), t) - this->begin();
}
T upper_bound(T t) const {
return std::upper_bound(this->begin(), this->end(), t) - this->begin();
}
T accumulate() const {
return std::accumulate(this->begin(), this->end(), T());
}
template <typename S, typename Function>
S accumulate(S n, Function func) const {
return std::accumulate(this->begin(), this->end(), n, func);
}
template <typename Int> static Vector<T> makeVector(Int n) {
return Vector<T>(n);
}
template <typename Int> static Vector<T> makeVector(Input &in, Int n) {
return Vector<T>(n, in);
}
template <typename Int, typename... Ints>
static auto makeVector(Input &in, Int n, Ints... ints) {
Vector<decltype(makeVector(in, ints...))> res;
for (int i = 0; i < n; ++i) {
res.emplace_back(makeVector(in, ints...));
}
return res;
}
template <typename Int, typename... Ints>
static auto makeVector(Int n, Ints... ints) {
Vector<decltype(makeVector(ints...))> res;
for (int i = 0; i < n; ++i) {
res.emplace_back(makeVector(ints...));
}
return res;
}
Vector<T> &unique() {
this->erase(std::unique(this->begin(), this->end()), this->end());
return *this;
}
bool next_permutation() {
return std::next_permutation(this->begin(), this->end());
}
Vector<T> &rotate(int n) {
std::rotate(this->begin(), this->begin() + n, this->end());
return *this;
}
Map<T, int> countAll() const {
Map<T, int> res;
for (const auto &i : *this) {
++res[i];
}
return res;
}
T matmul(const T &a) const {
return this->transform([&](const T &i) { return i.inner_product(a); });
}
};
template <typename T> Vector<T> iota(int n, T m = 0) {
Vector<T> v(n);
std::iota(v.begin(), v.end(), m);
return v;
}
template <typename T, typename S> void read(Vector<T> &t, Vector<S> &s) {
for (int i = 0; i < t.size(); ++i) {
t[i] = T(in);
s[i] = S(in);
}
}
template <typename T, typename S, typename U>
void read(Vector<T> &t, Vector<S> &s, Vector<U> &u) {
for (int i = 0; i < t.size(); ++i) {
t[i] = T(in);
s[i] = S(in);
u[i] = U(in);
}
}
template <typename T> Vector<T> operator+(const T &a, const Vector<T> &b) {
return b + a;
}
template <typename T> Vector<T> operator-(const T &a, const Vector<T> &b) {
return -b + a;
}
template <typename T> Vector<T> operator*(const T &a, const Vector<T> &b) {
return b * a;
}
/**************/
/* string.hpp */
/**************/
#include <string>
class String : public std::string {
public:
constexpr static auto npos = std::string::npos;
String() : std::string() {}
String(char c) : std::string(1, c) {}
String(int n) : std::string(std::to_string(n)) {}
String(long n) : std::string(std::to_string(n)) {}
String(long long n) : std::string(std::to_string(n)) {}
String(const char *s) : std::string(s) {}
String(const std::string &s) : std::string(s) {}
String(int n, char c) : std::string(n, c) {}
String(Input &in) {
std::cin >> *this;
in.eof = std::cin.eof();
}
String &operator+=(const String &s) { return *this = *this + s; }
String operator+(const String &s) const { return std::operator+(*this, s); }
String &operator+=(const char *s) { return *this = *this + s; }
String operator+(const char *s) const { return std::operator+(*this, s); }
String &operator+=(char s) { return *this = *this + s; }
String operator+(char s) const { return std::operator+(*this, s); }
static String getline() {
String v;
std::getline(std::cin, v);
in.eof = std::cin.eof();
return v;
}
String substr(size_t pos, size_t n_pos = std::string::npos) {
return std::string::substr(pos, n_pos);
}
String &reverse() {
std::reverse(this->begin(), this->end());
return *this;
}
Vector<String> split(char delim = ' ') const {
std::stringstream ss(*this);
Vector<String> res;
for (std::string tmp; std::getline(ss, tmp, delim);) {
if (tmp != "") {
res.emplace_back(tmp);
}
}
return res;
}
String &toupper() {
for (auto &c : *this) {
c = std::toupper(c);
}
return *this;
}
String &tolower() {
for (auto &c : *this) {
c = std::tolower(c);
}
return *this;
}
template <typename Function> String transform(Function func) const {
String res;
std::transform(this->begin(), this->end(), std::back_inserter(res), func);
return res;
}
bool contains(const String &s) const {
return this->find(s) != std::string::npos;
}
String &erase(char c) {
String res;
for (char i : *this) {
if (i != c) {
res += i;
}
}
return *this = res;
}
int count(char c) const { return std::count(this->begin(), this->end(), c); }
template <bool Repeat = false>
String &replaceAll(const String &from, const String &to) {
for (size_t pos = 0; (pos = this->find(from, pos)) != std::string::npos;) {
this->replace(pos, from.size(), to);
if (!Repeat) {
pos += to.size();
}
}
return *this;
}
String &sort() {
std::sort(this->begin(), this->end());
return *this;
}
String &rsort() {
std::sort(this->rbegin(), this->rend());
return *this;
}
String &unique() {
std::string::erase(std::unique(this->begin(), this->end()), this->end());
return *this;
}
String &rotate(int n) {
std::rotate(this->begin(), this->begin() + n, this->end());
return *this;
}
bool next_permutation() {
return std::next_permutation(this->begin(), this->end());
}
template <typename T, typename Function1, typename Function2>
T inner_product(const String &v, T init, Function1 func1,
Function2 func2) const {
return std::inner_product(this->begin(), this->end(), v.begin(), init,
func1, func2);
}
template <typename Function> int find_if(Function func) const {
return std::find_if(this->begin(), this->end(), func) - this->begin();
}
template <typename Function> bool all_of(Function func) const {
return std::all_of(this->begin(), this->end(), func);
}
template <typename Function> bool any_of(Function func) const {
return std::any_of(this->begin(), this->end(), func);
}
template <typename Function> bool none_of(Function func) const {
return std::none_of(this->begin(), this->end(), func);
}
int size() const { return std::string::size(); }
operator int() const { return std::stoi(*this); }
operator long() const { return std::stol(*this); }
operator long long() const { return std::stoll(*this); }
operator float() const { return std::stof(*this); }
operator double() const { return std::stod(*this); }
operator long double() const { return std::stold(*this); }
};
/************/
/* main.cpp */
/************/
int main() {
String s(in);
Map<char, int> m;
for (char c : s) {
++m[c];
}
cout << min({m['t'], m['r'], m['e'] / 2}) << endl;
}
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0