Submission #1185765

#	Time	Username	Problem	Language	Result	Execution time	Memory
1185765		Mamikonm1	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include<bits//stdc++.h>
#include "combo.h"
using namespace std;
string guess_sequence(int N) {
    string s;
    vector<pair<int,char>>x({{0,'A'},{0,'B'},{0,'X'},{0,'Y'});
    set<string>st;
    int mx=0,cur;
    for(;;){
        bool ok=0;
        for(char j:x){
            s+=j.second;
            if(!st.count(s)){
                cur=press(s);
                if(cur>mx){
                    mx=cur;
                    ok=1;
                    break;
                }
                st.insert(s);
            }
            s.pop_back();
        }
        if(!ok or s.size()==N)break;
    }
    for(;s.size()!=N;){
        bool ok=0;
        for(char j:x){
            s=j.second+s;
            if(!st.count(s)){
                cur=press(s);
                if(cur>mx){
                    mx=cur;
                    ok=1;
                    break;
                }
                st.insert(s);
            }
            reverse(begin(s),end(s));
            s.pop_back();
            reverse(begin(s),end(s));
        }
        if(!ok)break;
    }
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:6:61: error: expected '}' before ')' token
    6 |     vector<pair<int,char>>x({{0,'A'},{0,'B'},{0,'X'},{0,'Y'});
      |                             ~                               ^
combo.cpp:11:20: error: cannot convert 'std::pair<int, char>' to 'char' in initialization
   11 |         for(char j:x){
      |                    ^
combo.cpp:12:18: error: request for member 'second' in 'j', which is of non-class type 'char'
   12 |             s+=j.second;
      |                  ^~~~~~
combo.cpp:28:20: error: cannot convert 'std::pair<int, char>' to 'char' in initialization
   28 |         for(char j:x){
      |                    ^
combo.cpp:29:17: error: request for member 'second' in 'j', which is of non-class type 'char'
   29 |             s=j.second+s;
      |                 ^~~~~~