Submission #630468

#	Time	Username	Problem	Language	Result	Execution time	Memory
630468		NintsiChkhaidze	콤보 (IOI18_combo)	C++14	5 / 100	1 ms	216 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
#define pb push_back
using namespace std;
 
vector <char> v = {'A', 'B', 'X', 'Y'}, w;
string guess_sequence(int N) {
  string S = "";
  char f = v[3];
  
  for (int i=0;i<3; i++){
    string P = S + v[i];
    if (press(P) == 1) {
      f = v[i];
      break;
    }
  }
  
  S+=f;
  for (auto c: v)
      if (c!=f) w.pb(c);
    
  while (S.size() < N - 1){
    string p = S + w[0] + S + w[1] + w[0] + S + w[1] + w[1] + S + w[1] + w[2];
    int coins = press(p),s = S.size();
    if (coins == s) S += w[2];
    else if (coins == s + 1) S += w[0];
    else if (coins == s + 2) S += w[1];
  }
  
  char ls = w[2];
  for (int i=0;i<2; i++){
    string P = S + w[i];
    if (press(P) == S.size() + 1) {
      ls = w[i];
      break;
    }
  }

  S += ls;
  return S;
}
 
// ABXYBXXXXBY

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:23:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   23 |   while (S.size() < N - 1){
      |          ~~~~~~~~~^~~~~~~
combo.cpp:34:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     if (press(P) == S.size() + 1) {
      |         ~~~~~~~~~^~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95