Submission #1056568

#	Time	Username	Problem	Language	Result	Execution time	Memory
1056568		juicy	Ancient Machine (JOI21_ancient_machine)	C++17	100 / 100	37 ms	8992 KiB

Anna

#include "Anna.h"
 
#include <bits/stdc++.h>
 
using namespace std;
 
namespace {
  template<class T>
  ostream &operator << (ostream &os, vector<T> v) {
    int D = v.size();
    os << "{";
    for (int i = 0; i < D; ++i) {
      os << (i ? ", " : "") << v[i];
    }
    return os << "}";
  }
 
  void __print() {
    cerr << "]\n";
  }
 
  template<class T, class... V>
  void __print(T t, V... v) {
    cerr << t;
    if (sizeof...(v)) {
      cerr << ", ";
    }
    __print(v...);
  }
 
  #define debug(x...) cerr << "[" << #x << "] = ["; __print(x);
}
 
void Anna(int N, std::vector<char> S) {
  int B = 63, K = 44;
  vector<long long> fib(B);
  fib[0] = 1, fib[1] = 2;
  for (int i = 2; i < B; ++i) {
    fib[i] = fib[i - 1] + fib[i - 2];
  }
  auto encode = [&](vector<int> msg) {
    long long res = 0;
    for (int i = B - 1; i >= 0; --i) {
      res += msg[B - i - 1] * fib[i];
    }
    return res;
  };
  int p = 0;
  vector<int> msg;
  while (p < N && S[p] != 'X') {
    ++p;
    msg.push_back(0);
  }
  if (p < N) {
    msg.push_back(1);
    msg.push_back(0);
    ++p;
  }
  for (; p < N; ++p) {
    if (S[p] == 'Z' && (p + 1 == N || S[p + 1] != S[p])) {
      msg.push_back(1);
    } else {
      msg.push_back(0);
    }
  }
  while (msg.size() % B) {
    msg.push_back(0);
  }
  for (int i = 0; i < msg.size(); i += B) {
    auto x = encode(vector(msg.begin() + i, msg.begin() + i + B));
    for (int j = 0; j < K; ++j) {
      Send(x >> j & 1);
    }
  }
}

Bruno

#include "Bruno.h"
 
#include <bits/stdc++.h>
 
using namespace std;
 
namespace {
  void __print() {
    cerr << "]\n";
  }
 
  template<class T, class... V>
  void __print(T t, V... v) {
    cerr << t;
    if (sizeof...(v)) {
      cerr << ", ";
    }
    __print(v...);
  }
 
  #define debug(x...) cerr << "[" << #x << "] = ["; __print(x);
}
 
void Bruno(int N, int L, std::vector<int> A) {
  int B = 63, K = 44;
  vector<long long> fib(B);
  fib[0] = 1, fib[1] = 2;
  for (int i = 2; i < B; ++i) {
    fib[i] = fib[i - 1] + fib[i - 2];
  }
  auto decode = [&](long long x) {
    string msg;
    for (int i = B - 1; i >= 0; --i) {
      if (x >= fib[i]) {
        msg += '1';
        x -= fib[i];
      } else {
        msg += '0';
      }
    }
    return msg;
  };
  string S;
  for (int i = 0; i < L; i += K) {
    long long x = 0;
    for (int j = 0; j < K; ++j) {
      if (A[i + j]) {
        x += 1LL << j;
      }
    }
    S += decode(x);
  } 
  int p = 0;
  while (p < N && S[p] == '0') {
    Remove(p++);
  }
  if (p == N) {
    return;
  }
  int i = p + 2, lst = i;
  for (; i <= N; ++i) {
    if (S[i] == '1') {
      for (int j = i - 1; j >= lst; --j) {
        Remove(j - 1);
      }
      Remove(i - 1);
      lst = i + 1;
    }
  }
  for (i = N; i >= lst; --i) {
    Remove(i - 1);
  }
  Remove(p);
}

Compilation message (stderr)

Anna.cpp: In function 'void Anna(int, std::vector<char>)':
Anna.cpp:69:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |   for (int i = 0; i < msg.size(); i += B) {
      |                   ~~^~~~~~~~~~~~
Anna.cpp: At global scope:
Anna.cpp:18:8: warning: 'void {anonymous}::__print()' defined but not used [-Wunused-function]
   18 |   void __print() {
      |        ^~~~~~~

Bruno.cpp:8:8: warning: 'void {anonymous}::__print()' defined but not used [-Wunused-function]
    8 |   void __print() {
      |        ^~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 95 / 95