Submission #1311555

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311555		aleksandre	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

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

string guess_sequence(int N) {
    char k;
    if (press("AB") > 0) {
        if (press("B") > 0) k = 'B';
        else k = 'A';
    } else {
        if (press("X") > 0) k = 'X';
        else k  = 'Y';
    }
    vector<char> v;
    for (char c : {'A','B','X','Y'}) {
        if (c != k) v.push_back(c);
    }
    string S(1, k);
    for (int i = 1; i < N-1; i++) {
        string curr = S + v[0] + v[0] + S + v[0] + v[1] + S + v[0] + v[2] + S + v[1];
        int res = press(curr);
        if (res == i + 2) {
            S += v[0];
        } else if (res == i + 1) {
            S += v[1];
        } else {
            S += v[2];
    }
    if (N > 1) {
        string curr = S + v[0] + S+v[1];
        if (press(curr)==N) {
             curr = S+v[0];
             if (press(curr)==N) {
                S = S + v[0];
            } else {
        S = S+v[1];
        }
        } else {
            S = S+v[2];
        }
    }
    return S;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:43:2: error: expected '}' at end of input
   43 | }
      |  ^
combo.cpp:5:30: note: to match this '{'
    5 | string guess_sequence(int N) {
      |                              ^
combo.cpp:43:2: warning: control reaches end of non-void function [-Wreturn-type]
   43 | }
      |  ^