Submission #212263

#	Time	Username	Problem	Language	Result	Execution time	Memory
212263		jk89	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <cstdio>
#include <algorithm>
#include <vector>
#include <iostream>

using namespace std;

#define f first
#define s second

const int MAXN = 2e3 + 3;

bool zab[4];
char who[4] = {'A', 'B', 'X', 'Y'};

string guess_sequence(int n) {
    string ans, temp;
    char spc;
    if (press("A") == 1)
        zab[0] = true;
    else if (press("B") == 1)
        zab[1] = true;
    else if (press("X") == 1)
        zab[2] = true;
    else
        zab[3] = true;
    bool wys = false;
    for (int i = 0; i < 4; i++) {
        if (zab[i]) {
            wys = true;
            spc = who[i];
            continue;
        }
        if (wys)
            swap(who[i - 1], who[i]);
    }
    ans += spc;
    if (n == 1)
        return ans;
    int roz = 1;
    int wyn;
    for (int i = 1; i < n - 1; i++) {
        wyn = press(ans + who[0] + ans + who[1] + who[0] + ans + who[1] + who[1] + ans + who[1] + who[2]);
        if (wyn == roz)
            ans += who[2];
        else if (wyn == roz + 1)
            ans += who[0];
        else
            ans += who[1];
        roz++;
    }
    if (press(ans + who[0]) == roz + 1)
        ans += who[0];
    else if (press(ans + who[1]) == roz + 1)
        ans += who[1];
    else
        ans += who[2];
    return ans;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:19:9: error: 'press' was not declared in this scope
   19 |     if (press("A") == 1)
      |         ^~~~~
combo.cpp:43:15: error: 'press' was not declared in this scope
   43 |         wyn = press(ans + who[0] + ans + who[1] + who[0] + ans + who[1] + who[1] + ans + who[1] + who[2]);
      |               ^~~~~
combo.cpp:52:9: error: 'press' was not declared in this scope
   52 |     if (press(ans + who[0]) == roz + 1)
      |         ^~~~~