Submission #1253374

#	Time	Username	Problem	Language	Result	Execution time	Memory
1253374		avohado	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
using namespace std;
#define mod 1000000007
#define maxn 200005
#define f first
#define s second
#define ll long long
#define pb(x) push_back(x)
string guess_sequence(int n){
    string s;
    string c1="B", c2="X", c3="Y";
    int f=press("B");
    if(f){
        c1="A";
        s="B";
    }else if(press("X")){
        c2="A";
        s="X";
    }else if(press("Y")){
        c3="A";
        s="Y";
    }else{
        s="A";
    }
    while(s.size()<n-1){
        f=press(s+c1+s+c2+c1+s+c2+c2+s+c2+c3);
        if(f==s.size()){
            s+=c3;
        }else if(s.size()==f-1){
            s+=c1;
        }else{
            s+=c2;
        }
    }
    if(press(s1+c1)==n){
        return s1+c1;
    }else if(press(s1+c2)==n){
        return s1+c2;
    }else{
        return s1+c3;
    }
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:12:11: error: 'press' was not declared in this scope
   12 |     int f=press("B");
      |           ^~~~~
combo.cpp:35:14: error: 's1' was not declared in this scope; did you mean 'c1'?
   35 |     if(press(s1+c1)==n){
      |              ^~
      |              c1