Submission #1272776

#	Time	Username	Problem	Language	Result	Execution time	Memory
1272776		gazizmadi11	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#define pb push_back
#define pf push_front
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define pii pair<int,int>
#define tm (tl+tr)/2
#define TL v+v, tl, tm
#define TR v+v+1, tm+1, tr
#define DA l <= tl && tr <= r
#define NE r < tl || tr < l
#define double long double
#define int long long 
using namespace std;
 
const int N=2e5+7;
const int mod=998244353;
const int inf=2e9;

string guess_sequence(int N){
    string s="";
    for(int i=1; i <= 3; i++){
        for(int j=1; j <= 4; j++){
            if(j==1)s+="A";
            else if(j==2)s+="B";
            else if(j==3)s+="X";
            else if(j==4)s+="Y";
            int x=press(s);
            if(x==i)break;
            s.erase(s.rbegin());
        }
    }
    return s;
}
int press(string p){

}
void solve(){
}
// signed main(){
 
    // ios_base::sync_with_stdio(0);
    // cin.tie(0);
    // int t=1;
    // cin >> t;     
    // while(t--)solve();
    
// return 0;
// }

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(long long int)':
combo.cpp:29:19: error: 'press' was not declared in this scope
   29 |             int x=press(s);
      |                   ^~~~~
combo.cpp:31:20: error: no matching function for call to 'std::__cxx11::basic_string<char>::erase(std::__cxx11::basic_string<char>::reverse_iterator)'
   31 |             s.erase(s.rbegin());
      |             ~~~~~~~^~~~~~~~~~~~
In file included from /usr/include/c++/13/string:54,
                 from /usr/include/c++/13/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:52,
                 from combo.cpp:1:
/usr/include/c++/13/bits/basic_string.h:2069:7: note: candidate: 'constexpr std::__cxx11::basic_string<_CharT, _Traits, _Alloc>& std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::erase(size_type, size_type) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
 2069 |       erase(size_type __pos = 0, size_type __n = npos)
      |       ^~~~~
/usr/include/c++/13/bits/basic_string.h:2069:23: note:   no known conversion for argument 1 from 'std::__cxx11::basic_string<char>::reverse_iterator' {aka 'std::reverse_iterator<__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> > >'} to 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
 2069 |       erase(size_type __pos = 0, size_type __n = npos)
      |             ~~~~~~~~~~^~~~~~~~~
/usr/include/c++/13/bits/basic_string.h:2089:7: note: candidate: 'constexpr std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::erase(__const_iterator) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; iterator = std::__cxx11::basic_string<char>::iterator; __const_iterator = std::__cxx11::basic_string<char>::const_iterator]'
 2089 |       erase(__const_iterator __position)
      |       ^~~~~
/usr/include/c++/13/bits/basic_string.h:2089:30: note:   no known conversion for argument 1 from 'std::__cxx11::basic_string<char>::reverse_iterator' {aka 'std::reverse_iterator<__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> > >'} to 'std::__cxx11::basic_string<char>::__const_iterator' {aka 'std::__cxx11::basic_string<char>::const_iterator'}
 2089 |       erase(__const_iterator __position)
      |             ~~~~~~~~~~~~~~~~~^~~~~~~~~~
/usr/include/c++/13/bits/basic_string.h:2109:7: note: candidate: 'constexpr std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::iterator std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::erase(__const_iterator, __const_iterator) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; iterator = std::__cxx11::basic_string<char>::iterator; __const_iterator = std::__cxx11::basic_string<char>::const_iterator]'
 2109 |       erase(__const_iterator __first, __const_iterator __last)
      |       ^~~~~
/usr/include/c++/13/bits/basic_string.h:2109:7: note:   candidate expects 2 arguments, 1 provided
combo.cpp: In function 'long long int press(std::string)':
combo.cpp:38:1: warning: no return statement in function returning non-void [-Wreturn-type]
   38 | }
      | ^