Submission #79157

#	Time	Username	Problem	Language	Result	Execution time	Memory
79157		patcasrares	Combo (IOI18_combo)	C++14	100 / 100	90 ms	660 KiB

combo

#include<fstream>
#include<vector>
#include "combo.h"
#include<iostream>
#define pb push_back
using namespace std;
string guess_sequence(int n)
{
    int r,poz,cnt=-1;
    char c[4]={'A','B','X','Y'},a[4];
    string p,rez;
    p="AB";
    r=press(p);
    if(r>0)
        poz=0;
    else
        poz=2;
    p=c[poz];
    r=press(p);
    if(r==0)
        poz++;
    rez.pb(c[poz]);
    for(int i=0;i<4;i++)
        if(i!=poz)
        {
            cnt++;
            a[cnt]=c[i];
        }
    if(n==1)
        return rez;
    for(int i=2;i<n;i++)
    {
        string p;
        for(int j=0;j<rez.size();j++)
            p.pb(rez[j]);
        p.pb(a[0]);
        for(int j=0;j<rez.size();j++)
            p.pb(rez[j]);
        p.pb(a[1]);
        p.pb(a[0]);
        for(int j=0;j<rez.size();j++)
            p.pb(rez[j]);
        p.pb(a[1]);
        p.pb(a[1]);
        for(int j=0;j<rez.size();j++)
            p.pb(rez[j]);
        p.pb(a[1]);
        p.pb(a[2]);
        r=press(p);
        if(r==i)
        {
            rez.pb(a[0]);
            continue;
        }
        if(r==i+1)
        {
            rez.pb(a[1]);
            continue;
        }
        rez.pb(a[2]);
    }
    string q;
    for(int j=0;j<rez.size();j++)
        q.pb(rez[j]);
    q.pb(a[0]);
    for(int j=0;j<rez.size();j++)
        q.pb(rez[j]);
    q.pb(a[1]);
    r=press(q);
    if(r==n)
    {
        string p;
        for(int j=0;j<rez.size();j++)
            p.pb(rez[j]);
        p.pb(a[0]);
        r=press(p);
        if(r==n)
            rez.pb(a[0]);
        else
            rez.pb(a[1]);
    }
    else
        rez.pb(a[2]);
    return rez;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |         for(int j=0;j<rez.size();j++)
      |                     ~^~~~~~~~~~~
combo.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |         for(int j=0;j<rez.size();j++)
      |                     ~^~~~~~~~~~~
combo.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |         for(int j=0;j<rez.size();j++)
      |                     ~^~~~~~~~~~~
combo.cpp:45:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for(int j=0;j<rez.size();j++)
      |                     ~^~~~~~~~~~~
combo.cpp:63:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |     for(int j=0;j<rez.size();j++)
      |                 ~^~~~~~~~~~~
combo.cpp:66:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |     for(int j=0;j<rez.size();j++)
      |                 ~^~~~~~~~~~~
combo.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for(int j=0;j<rez.size();j++)
      |                     ~^~~~~~~~~~~

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