Submission #78797

#	Time	Username	Problem	Language	Result	Execution time	Memory
78797		patcasrares	Combo (IOI18_combo)	C++14	5 / 100	2 ms	256 KiB

combo

#include<iostream>
#include "combo.h"
using namespace std;
int press2(string s,int n)
{
    //cout<<s.size()<<' '<<4*n<<'\n';
    if(s.size()>4*n)
    while(1){}
    return press(s);
}
string guess_sequence(int n)
{
    int r,poz=0,cnt=-1;
    char a[3],cand[4]={'A','B','X','Y'};
    string q,rez;
    q="AB";
    r=press2(q,n);
    if(r)
        poz=0;
    else
        poz=2;
    q=cand[poz];
    r=press2(q,n);
    if(r==0)
        poz++;
    for(int i=0;i<4;i++)
        if(i!=poz)
        {
            cnt++;
            a[cnt]=cand[i];
        }
    rez=cand[poz];
    cnt=1;
    poz=2;
    for(int i=2;i<n;i++)
    {
        q=rez+a[0]+rez+a[1]+a[0]+rez+a[1]+a[1]+rez+a[1]+a[2];
        r=press2(q,n);
        if(r==i-1)
        {
            rez.push_back(a[2]);
            continue;
        }
        else
        if(r==i)
        {
            rez.push_back(a[0]);
            continue;
        }
        else
        rez.push_back(a[1]);
    }
    q=rez+a[0]+rez+a[1];
    r=press2(q,n);
    if(r==n)
    {
        q=rez+a[0];
        r=press2(q,n);
        if(r==n)
            rez.push_back(a[0]);
        else
            rez.push_back(a[1]);
    }
    else
        rez.push_back(a[2]);
    return rez;
}

Compilation message (stderr)

combo.cpp: In function 'int press2(std::string, int)':
combo.cpp:7:16: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    7 |     if(s.size()>4*n)
      |        ~~~~~~~~^~~~

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