Submission #1220959

#	Time	Username	Problem	Language	Result	Execution time	Memory
1220959		FaresSTH	콤보 (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

#include"bits/stdc++.h"
#include"combo.h"
using namespace std;
using ll=long long;
#define S second
#define F first
int q;
void qry(string s){
       q=press(s);
}
string guess_sequence(int n){
       string s;
       qry("AB");
       if(q==1)qry("A"),s+=(q?'A':'B');
       else qry("X"),s+=(q?'X':'Y');
       char val[3];q=0;
       for(char c:"ABXY")if(c!=s[0])val[q++]=c;
       for(int i=1;i<n-1;i++){
              qry(s+val[0]+s+val[1]+val[0]+s+val[1]+val[1]+s+val[1]+val[2]);
              if(q==0)s+=val[2];
              else if(q==1)s+=val[0];
              else s+=val[1];
       }
       qry(val[0]+val[1]);
       if(q==1)qry(val[0]),s+=val[q];
       else s+=val[2];
       return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:24:18: error: could not convert '(((int)val[0]) + ((int)val[1]))' from 'int' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   24 |        qry(val[0]+val[1]);
      |            ~~~~~~^~~~~~~
      |                  |
      |                  int
combo.cpp:25:25: error: could not convert 'val[0]' from 'char' to 'std::string' {aka 'std::__cxx11::basic_string<char>'}
   25 |        if(q==1)qry(val[0]),s+=val[q];
      |                    ~~~~~^
      |                         |
      |                         char