Submission #1151894

#	Time	Username	Problem	Language	Result	Execution time	Memory
1151894		at128	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>     
#include <ext/pb_ds/tree_policy.hpp>  

using namespace std;
using namespace __gnu_pbds;
 
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
 
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define debug(x...)
#endif

typedef tree<
    int,
    null_type,
    less_equal<int>,
    rb_tree_tag,
    tree_order_statistics_node_update> ordered_set;
typedef tree<
    int,
    null_type,
    less<int>,
    rb_tree_tag,
    tree_order_statistics_node_update> ordered_multiset;    
 
#define all(v)              ((v).begin()), ((v).end())
#define sz(v)               ((int)((v).size()))
#define pb                  push_back
 
typedef long long         ll;


string guess_sequence(int n){
    set<char>s;
    s.insert('A');
    s.insert('B');
    s.insert('X');
    s.insert('Y');
    int c=0;
    string res;
    while(res.size()<n){
        for(char c:s){
            string t=res;
            t.pb(c);
            int p=press(t);
            if(p>res.size()){
                if(res.size()==0){
                    s.erase(c);
                    break;
                }
                res=t;
                break;
            }
        }
    }
    return res;
}
 

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:67:19: error: 'press' was not declared in this scope; did you mean 'res'?
   67 |             int p=press(t);
      |                   ^~~~~
      |                   res