#include <cstddef>
#include <cctype>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <tuple>
#include <utility>

class format {
public:
  using size_type = size_t;

private:
  char const* M_fmt;
  size_type M_nvars = 0;
  size_type M_error = -1;

  void M_print(std::ostream& os, char const* pos) const {
    while (*pos) {
      if (*pos == '{' || *pos == '}') ++pos;
      os << *pos++;
    }
  }

  template <typename Tp, typename... Args>
  void M_print(std::ostream& os, char const* pos, Tp const& x, Args const&... xs) const {
    while (true) {
      if (*pos == '{') {
        if (pos[1] == '{') {
          ++pos;
          os << '{';
        } else {
          char const* next = M_print_formatted(os, pos, x);
          return M_print(os, next, xs...);
        }
      } else {
        if (*pos == '}') ++pos;
        os << *pos;
      }
      ++pos;
    }
    char const* next = M_print_formatted(os, pos, x);
    M_print(os, next, xs...);
  }

  template <typename Tp>
  char const* M_print_formatted(std::ostream& os, char const* pos, Tp const& x) const {
    // parse flags, preferably
    while (*++pos != '}') {}
    os << x;
    return ++pos;
  }

  void M_scan(std::istream& is, char const* pos) const {
    while (true) {
      if (*pos == '{' || *pos == '}') ++pos;
      if (isspace(*pos)) {
        while (isspace(is.peek())) is.get();
      } else {
        if (is.peek() == *pos) {
          ++pos;
          is.get();
        } else {
          return;
        }
      }
    }
  }

  template <typename Tp, typename... Args>
  void M_scan(std::istream& is, char const* pos, Tp& x, Args&&... xs) const {
    while (true) {
      if (*pos == '{') {
        if (pos[1] == '{') {
          if (is.peek() == '{') {
            ++pos;
            is.get();
          } else {
            return;
          }
        } else {
          char const* next = M_scan_formatted(is, pos, x);
          return M_scan(is, next, xs...);
        }
      } else if (isspace(*pos)) {
        while (isspace(is.peek())) is.get();
        ++pos;
      } else {
        if (*pos == '}') ++pos;
        if (is.peek() == *pos) {
          ++pos;
          is.get();
        } else {
          return;
        }
      }
    }
  }

  template <typename Tp>
  char const* M_scan_formatted(std::istream& is, char const* pos, Tp& x) const {
    // parse flags, preferably
    while (*++pos != '}') {}
    is >> x;
    return ++pos;
  }

public:
  constexpr format(char const* fmt): M_fmt(fmt) {
    bool opens = 0;
    size_type i = 0;
    for (; fmt[i]; ++i) {
      if (fmt[i] == '{') {
        if (fmt[i+1] == '{') { ++i; continue; }  // escaped
        if (opens) { M_error = i; return; }
        opens = true;
      } else if (fmt[i] == '}') {
        if (fmt[i+1] == '}') { ++i; continue; }  // escaped
        if (!opens) { M_error = i; return; }
        opens = false;
        ++M_nvars;
      }
    }
    if (opens) { M_error = i; return; }
  }

  template <typename... Args>
  void print_(std::ostream& os, Args const&... xs) const {
    M_print(os, M_fmt, xs...);
  }

  template <typename... Args>
  void scan_(std::istream& is, Args&&... xs) const {
    M_scan(is, M_fmt, xs...);
  }

  constexpr size_type count() const { return M_nvars; }
  constexpr size_type error() const { return M_error; }
};

#define args_size(...)                                                  \
  std::tuple_size<decltype(std::make_tuple(__VA_ARGS__))>::value

#define fprint(os, fmt, ...) do {                                       \
    constexpr format f(fmt);                                            \
    constexpr size_t lhs = f.count();                                   \
    constexpr size_t rhs = args_size(__VA_ARGS__);                      \
    static_assert(lhs == rhs, "size mismatch");                         \
    static_assert(f.error()+1 == 0, "misformatted");                    \
    f.print_(os, __VA_ARGS__);                                          \
  } while (false)

#define fprintln(os, fmt, ...) do {             \
    fprint(os, fmt, __VA_ARGS__);               \
    os << '\n';                                 \
  } while (false)

#define print(fmt, ...) fprint(std::cout, fmt, __VA_ARGS__)
#define println(fmt, ...) fprintln(std::cout, fmt, __VA_ARGS__)
#define eprint(fmt, ...) fprint(std::cerr, fmt, __VA_ARGS__)
#define eprintln(fmt, ...) fprintln(std::cerr, fmt, __VA_ARGS__)

#define fscan(is, fmt, ...) do {                        \
    constexpr format f(fmt);                            \
    constexpr size_t lhs = f.count();                   \
    constexpr size_t rhs = args_size(__VA_ARGS__);      \
    static_assert(lhs == rhs, "size mismatch");         \
    static_assert(f.error()+1 == 0, "misformatted");    \
    f.scan_(is, __VA_ARGS__);                           \
  } while (false);

#define scan(fmt, ...) fscan(std::cin, fmt, __VA_ARGS__)

__attribute__((constructor))
void ioinit() {
  std::ios_base::sync_with_stdio(false);
  std::cin.tie(nullptr);
  std::cerr.tie(nullptr);
  std::cout << std::fixed << std::setprecision(16);
}

int main() {
  int64_t a, bi, bf;
  scan("{} {}.{}", a, bi, bf);
  a *= (bi*100 + bf);
  a /= 100;
  println("{}", a);
}


Measured memory_bytes: 3648