Submission #207675

#	Time	Username	Problem	Language	Result	Execution time	Memory
207675		Sho10	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

/*
ID: Sho10
LANG: C++
*/
#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long int
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define sz size
#define f first
#define s second
#define pb push_back
#define er erase
#define in insert
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod 1000000007
#define PI 3.14159265359
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
string guess_sequence(int N){
ll n=N;
string s="",ver="";
ll a=press("A");
if(a==1){
    ver=ver+"B";
    ver=ver+"X";
    ver=ver+"Y";
}else {
a=press("B");
if(a==1){
    ver=ver+"A";
    ver=ver+"X";
    ver=ver+"Y";
}else {
a=press("X");
if(a==1){
    ver=ver+"A";
    ver=ver+"B";
    ver=ver+"Y";
}else {
ver=ver+"A";
ver=ver+"B";
ver=ver+"X";
}
}
}
for(ll i=1;i<n;i++)
{
     a=-1;
for(ll j=0;j<ver.size()-1;j++)
{
    string x="";
    x=x+ver[j];
    a=press(x);
    if(a==1){
        s=s+ver[j];
        goto Next;
    }
}
s=s+ver[2];
Next:a=-1;
}
return s;
}
/*
int32_t main(){
CODE_START;
}
*/

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:27:6: error: 'press' was not declared in this scope
   27 | ll a=press("A");
      |      ^~~~~
combo.cpp:54:13: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 | for(ll j=0;j<ver.size()-1;j++)
      |            ~^~~~~~~~~~~~~