Submission #78790

#	Time	Username	Problem	Language	Result	Execution time	Memory
78790		patcasrares	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 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;
    string 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=rez+a[2];
            continue;
        }
        if(r==i)
        {
            rez=rez+a[0];
            continue;
        }
        rez=rez+a[1];
        if(press(rez)!=i)
        while(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=rez+a[0];
        else
            rez=rez+a[1];
    }
    else
        rez=rez+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)
      |        ~~~~~~~~^~~~
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:17:16: error: 'n' was not declared in this scope
   17 |     r=press2(q,n);
      |                ^