Submission #911373

#	Time	Username	Problem	Language	Result	Execution time	Memory
911373		Turcavid	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <string>

using namespace std;

string guess_sequence(int N)
{
    vector<char> v;
    v.push_back('A');
    v.push_back('B');
    v.push_back('X');
    v.push_back('Y');
    int del=4;
    string sus="";
    for(int i=0; i<3; i++)
    {
        sus.clear();
        sus.push_back(v[i]);
        if(press(sus) == 1)
            del=i;
    }
    string ans="";
    ans+=v[del];
    v.erase(v.begin()+del);
    for(int i=2; i<=N-1; i++)
    {
        string qr="";
        qr+=(ans+v[1]);
        qr+=(ans+v[2]+v[0]);
        qr+=(ans+v[2]+v[1]);
        qr+=(ans+v[2]+v[2]);
        cout<<qr<<'\n';
        int val=press(qr);
        if(val == i-1)
            ans+=v[0];
        if(val == i)
            ans+=v[1];
        if(val == i+1)
            ans+=v[2];
    }
    for(int i=0; i<3; i++)
    {
        string qr=ans;
        qr+=v[i];
        if(press(qr) == N)
            return qr;
    }
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:7:5: error: 'vector' was not declared in this scope
    7 |     vector<char> v;
      |     ^~~~~~
combo.cpp:2:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
    1 | #include <string>
  +++ |+#include <vector>
    2 | 
combo.cpp:7:12: error: expected primary-expression before 'char'
    7 |     vector<char> v;
      |            ^~~~
combo.cpp:8:5: error: 'v' was not declared in this scope
    8 |     v.push_back('A');
      |     ^
combo.cpp:18:12: error: 'press' was not declared in this scope
   18 |         if(press(sus) == 1)
      |            ^~~~~
combo.cpp:31:9: error: 'cout' was not declared in this scope
   31 |         cout<<qr<<'\n';
      |         ^~~~
combo.cpp:2:1: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    1 | #include <string>
  +++ |+#include <iostream>
    2 | 
combo.cpp:32:17: error: 'press' was not declared in this scope
   32 |         int val=press(qr);
      |                 ^~~~~
combo.cpp:44:12: error: 'press' was not declared in this scope
   44 |         if(press(qr) == N)
      |            ^~~~~
combo.cpp:13:16: warning: control reaches end of non-void function [-Wreturn-type]
   13 |     string sus="";
      |                ^~