Submission #340271

#	Time	Username	Problem	Language	Result	Execution time	Memory
340271		Fysty	Combo (IOI18_combo)	C++14	0 / 100	1 ms	200 KiB

combo

#include <bits/stdc++.h>
using namespace std;
int press(string p);
string guess_sequence(int n)
{
    string s="";
    if(n==1)
    {
        if(press("A")) return "A";
        else if(press("B")) return "B";
        else if(press("X")) return "X";
        else return "Y";
    }
    int k=press("AB");
    if(k)
    {
        if(press("AA")) s="A";
        else s="B";
    }
    else
    {
        if(press("XX")) s="X";
        else s="Y";
    }
    if(s=="A")
    {
        while(s.size()<n-1)
        {
            int t=press(s+"B"+s+"XB"+s+"XX"+s+"XY");
            if(t==1) s+="B";
            else if(t==2) s+="X";
            else s+="Y";
        }
        if(press(s+"B"+s+"X"))
        {
            if(press(s+"B")) s+="B";
            else s+="X";
        }
        else s+="Y";
    }
    if(s=="B")
    {
        while(s.size()<n-1)
        {
            int t=press(s+"A"+s+"XA"+s+"XX"+s+"XY");
            if(t==1) s+="A";
            else if(t==2) s+="X";
            else s+="Y";
        }
        if(press(s+"A"+s+"X"))
        {
            if(press(s+"A")) s+="A";
            else s+="X";
        }
        else s+="Y";
    }
    if(s=="X")
    {
        while(s.size()<n-1)
        {
            int t=press(s+"B"+s+"AB"+s+"AA"+s+"AY");
            if(t==1) s+="B";
            else if(t==2) s+="A";
            else s+="Y";
        }
        if(press(s+"B"+s+"A"))
        {
            if(press(s+"B")) s+="B";
            else s+="A";
        }
        else s+="Y";
    }
    if(s=="Y")
    {
        while(s.size()<n-1)
        {
            int t=press(s+"B"+s+"XB"+s+"XX"+s+"XA");
            if(t==1) s+="B";
            else if(t==2) s+="X";
            else s+="A";
        }
        if(press(s+"B"+s+"X"))
        {
            if(press(s+"B")) s+="B";
            else s+="X";
        }
        else s+="A";
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:27:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |         while(s.size()<n-1)
      |               ~~~~~~~~^~~~
combo.cpp:43:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   43 |         while(s.size()<n-1)
      |               ~~~~~~~~^~~~
combo.cpp:59:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   59 |         while(s.size()<n-1)
      |               ~~~~~~~~^~~~
combo.cpp:75:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   75 |         while(s.size()<n-1)
      |               ~~~~~~~~^~~~

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