Submission #1064751

#	Time	Username	Problem	Language	Result	Execution time	Memory
1064751		vjudge1	Combo (IOI18_combo)	C++17	5 / 100	1 ms	428 KiB

combo

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

string guess_sequence(int n) {
    string str="",ans="";
    str+="AB";
    int x=press(str);
    if(x>=1)
    {
        if(press("A"))
            ans+="A";
        else
            ans+="B";
    }
    else
    {
        if(press("X"))
            ans+="X";
        else
            ans+="Y";
    }
    str="";
    if(ans=="X")
        str="ABY";
    else if(ans=="Y")
        str="ABX";
    else if(ans=="A")
        str="BXY";
    else
        str="AXY";
    for(int i=2;i<=(n-2);i++)
    {
        string now=ans+str[0]+str[1]+ans+str[0]+str[0]+ans+str[0]+str[2]+ans+str[1];
        int temp=press(now);
        if(temp==ans.length())
        {
            ans+=str[2];
        }
        else if(temp==ans.length()+1)
        {
            ans+=str[1];
        }
        else
            ans+=str[0];
        //cout<<ans<<endl;
    }
    if(ans.length()==n)
        return ans;
    if(press(ans+str[0])==n-1)
        ans+=str[0];
    else if(press(ans+str[1])==n-1)
        ans+=str[1];
    else
        ans+=str[2];
    if(ans.length()==n)
        return ans;
    if(press(ans+str[0])==n)
        ans+=str[0];
    else if(press(ans+str[1])==n)
        ans+=str[1];
    else
        ans+=str[2];
    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:36:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         if(temp==ans.length())
      |            ~~~~^~~~~~~~~~~~~~
combo.cpp:40:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |         else if(temp==ans.length()+1)
      |                 ~~~~^~~~~~~~~~~~~~~~
combo.cpp:48:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   48 |     if(ans.length()==n)
      |        ~~~~~~~~~~~~^~~
combo.cpp:56:20: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   56 |     if(ans.length()==n)
      |        ~~~~~~~~~~~~^~~

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