Submission #772124

#	Time	Username	Problem	Language	Result	Execution time	Memory
772124		Alfraganus	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include "combo.h"

string guess_sequence(int n)
{
    string s;
    if(press("A") == 1)s = "A";
    else if(press("B") == 1)s = "B";
    else if(press("X") == 1)s = "X";
    else s = "Y";

    char dx[4] = {'A', 'B', 'X', 'Y'};

    for(int i = 1; i < n; i ++){
        for(int j = 0; j < 4; j ++){
            if(dx[j] != s[0]){
                if(press(s + dx[j]) == i + 1){
                    s += dx[j];
                    break;
                }
            }
        }
    }

    return s;
}

Compilation message (stderr)

combo.cpp:3:1: error: 'string' does not name a type; did you mean 'stdin'?
    3 | string guess_sequence(int n)
      | ^~~~~~
      | stdin