Submission #503698

#	Time	Username	Problem	Language	Result	Execution time	Memory
503698		cristi_a	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <iostream>
#include <string.h>
using namespace std;

string guess_sequence(int N) {
    char lets[4];
    strcpy(lets,"ABXY");
    string rez = "";
    if(press("AB")) rez = press("A") ? "A" : "B";
    else rez = press("X") ? "X" : "Y";

    for(int i=0; i<4; i++)
        if(lets[i]==rez[0]) {
            strcpy(lets+i,lets+i+1);
            break;
        }

    for(int i=1; i<N; i++) {
        if(i==N-1) {
            if(press(rez+lets[0])==N) rez = rez + lets[0];
            else if(press(rez+lets[1])==N) rez = rez + lets[1];
            else rez = rez + lets[2];
        }
        else {
            string temp = rez + lets[1] + rez + lets[0] + lets[0] + rez + lets[0] + lets[1] + rez + lets[0] + lets[2];
            int w = press(temp);
            if(w == i+1) rez = rez + lets[1];
            else if(w==i+2) rez = rez + lets[0];
            else rez = rez + lets[2];
        }
    }
    return rez;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:9:8: error: 'press' was not declared in this scope
    9 |     if(press("AB")) rez = press("A") ? "A" : "B";
      |        ^~~~~
combo.cpp:20:16: error: 'press' was not declared in this scope
   20 |             if(press(rez+lets[0])==N) rez = rez + lets[0];
      |                ^~~~~
combo.cpp:26:21: error: 'press' was not declared in this scope
   26 |             int w = press(temp);
      |                     ^~~~~