Submission #415190

#	Time	Username	Problem	Language	Result	Execution time	Memory
415190		aris12345678	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
using namespace std;

const int mxN = 2005;

string guess_sequence(int n) {
    string p = "", comb;
    if(press("A") == 1)
        p = "A", comb = "BXY";
    else if(press("B") == 1)
        p = "B", comb = "AXY";
    else if(press("X") == 1)
        p = "X", comb = "ABY";
    else
        p = "Y", comb = "ABX";
    while((int) p.length() < n-1) {
        int match = press(p+comb[0]+p+comb[1]+comb[0]+p+comb[1]+comb[1]+p+comb[1][2]);
        if(match == (int) p.length())
            p += comb[2];
        else if(match == (int) p.length()+1)
            p += comb[0];
        else
            p += comb[1];
    }
    if(press(p+comb[0]) == n)
        p += comb[0];
    else if(press(p+comb[1]) == n)
        p += comb[1];
    else
        p += comb[2];
    return p;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:18:82: error: invalid types '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}[int]' for array subscript
   18 |         int match = press(p+comb[0]+p+comb[1]+comb[0]+p+comb[1]+comb[1]+p+comb[1][2]);
      |                                                                                  ^