Submission #417866

#	Time	Username	Problem	Language	Result	Execution time	Memory
417866		LouayFarah	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

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

int press(string p);

string guess_sequence(int n)
{
    string res = "";
    string temp = "ABXY";
    for(int i = 0; i<3; i++)
    {
        string tr = "";
        tr.pb(temp[i]);
        if(press(tr)==1)
        {
            res.pb(temp[i]);
            break;
        }
    }
    if(res.length()==0)
        res.pb('Y');

    string used = "";
    for(int i = 0; i<4; i++)
    {
        if(res[0]==temp[i])
            continue;
        used.pb(temp[i]);
    }

    for(int i = 2; i<n; i++)
    {
        string s = "";
        s = s + res[0] + used[0];
        s = s + res[0] + used[1] + used[0];
        s = s + res[0] + used[1] + used[1];
        s = s + res[0] + used[1] + used[2];

        int k = press(s);
        if(k==(int)res.size())
            res.pb(used[2]);
        else if(k==(int)res.size() + 1)
            res.pb(used[0]);
        else
            res.pb(used[1]);
    }

    return res;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:14:12: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   14 |         tr.pb(temp[i]);
      |            ^~
combo.cpp:17:17: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   17 |             res.pb(temp[i]);
      |                 ^~
combo.cpp:22:13: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   22 |         res.pb('Y');
      |             ^~
combo.cpp:29:14: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   29 |         used.pb(temp[i]);
      |              ^~
combo.cpp:42:17: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   42 |             res.pb(used[2]);
      |                 ^~
combo.cpp:44:17: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   44 |             res.pb(used[0]);
      |                 ^~
combo.cpp:46:17: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   46 |             res.pb(used[1]);
      |                 ^~