Submission #624877

#	Time	Username	Problem	Language	Result	Execution time	Memory
624877		chubyxdxd	Combo (IOI18_combo)	C++11	30 / 100	47 ms	552 KiB

combo

#include "combo.h"
#include <bits/stdc++.h>
using namespace std;

std::string guess_sequence(int N) {
  string S= "";
  if(press("A")==1)S+='A';
  else{
    if(press("B")==1)S+='B';
    else{
      if(press("X")==1)S+='X';
      else S+='Y';
    }
  }
  string g="ABXY";
  string aux;
  for(int i=0;i<g.size();i++){
    if(S[0]!=g[i])aux+=g[i];
  }
  for(int i=1;i<N;i++){
    if(press(S+aux[0])>S.size())S+=aux[0];
    else{
      if(press(S+aux[1])>S.size())S+=aux[1];
      else S+=aux[2];
    }
  }
  return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:17:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   for(int i=0;i<g.size();i++){
      |               ~^~~~~~~~~
combo.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     if(press(S+aux[0])>S.size())S+=aux[0];
      |        ~~~~~~~~~~~~~~~^~~~~~~~~
combo.cpp:23:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |       if(press(S+aux[1])>S.size())S+=aux[1];
      |          ~~~~~~~~~~~~~~~^~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 25 / 95