Submission #1082995

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082995		KasymK	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include "bits/stdc++.h"
#include "combo.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}

string first_Letter_A(){
    string ans = "A";
    int x = 0;
    for(int i = 2; i < n; ++i){
        int s = (int)ans.size();
        x = press(ans+"X"+ans+"BX"+ans+"BB"+ans+"BY");
        if(x == s+1)
            ans += "X"; 
        else if(x == s+2)
            ans += "B";
        else
            ans += "Y";
    }
    if(press(ans+"B") == n)
        ans += "B";
    else if(press(ans+"X") == n)
        ans += "X";
    else
        ans += "Y";
    return ans;
}

string first_Letter_B(){
    string ans = "B";
    int x = 0;
    for(int i = 2; i < n; ++i){
        int s = (int)ans.size();
        x = press(ans+"X"+ans+"AX"+ans+"AA"+ans+"AY");
        if(x == s+1)
            ans += "X";
        else if(x == s+2)
            ans += "A";
        else
            ans += "Y";
    }
    if(press(ans+"A") == n)
        ans += "A";
    else if(press(ans+"X") == n)
        ans += "X";
    else
        ans += "Y";
    return ans;
}

string first_Letter_X(){
    string ans = "X";
    int x = 0;
    for(int i = 2; i < n; ++i){
        int s = (int)ans.size();
        x = press(ans+"A"+ans+"BA"+ans+"BB"+ans+"BY");
        if(x == s+1)
            ans += "A";
        else if(x == s+2)
            ans += "B";
        else
            ans += "Y";
    }
    if(press(ans+"A") == n)
        ans += "A";
    else if(press(ans+"B") == n)
        ans += "B";
    else
        ans += "Y";
    return ans;
}

string first_Letter_Y(){
    string ans = "Y";
    int x = 0;
    for(int i = 2; i < n; ++i){
        int s = (int)ans.size();
        x = press(ans+"A"+ans+"BA"+ans+"BB"+ans+"BX");
        if(x == s+1)
            ans += "A";
        else if(x == s+2)
            ans += "B";
        else
            ans += "X";
    }
    if(press(ans+"B") == n)
        ans += "B";
    else if(press(ans+"X") == n)
        ans += "X";
    else
        ans += "A";
    return ans;
}

string guess_sequence(int n){
    if(n == 1){
        string ans = "";
        if(press("A"))
            ans += "A";
        else if(press("B"))
            ans += "B";
        else if(press("X"))
            ans += "X";
        else
            ans += "Y";
        return ans;
    }
    if(press("AB")){
        if(press("A"))
            return first_Letter_A();
        else
            return first_Letter_B();
    }
    else{
        if(press("X"))
            return first_Letter_X();
        else
            return first_Letter_Y();
    }
    assert(false);
}

Compilation message (stderr)

combo.cpp: In function 'std::string first_Letter_A()':
combo.cpp:20:24: error: 'n' was not declared in this scope
   20 |     for(int i = 2; i < n; ++i){
      |                        ^
combo.cpp:30:26: error: 'n' was not declared in this scope
   30 |     if(press(ans+"B") == n)
      |                          ^
combo.cpp: In function 'std::string first_Letter_B()':
combo.cpp:42:24: error: 'n' was not declared in this scope
   42 |     for(int i = 2; i < n; ++i){
      |                        ^
combo.cpp:52:26: error: 'n' was not declared in this scope
   52 |     if(press(ans+"A") == n)
      |                          ^
combo.cpp: In function 'std::string first_Letter_X()':
combo.cpp:64:24: error: 'n' was not declared in this scope
   64 |     for(int i = 2; i < n; ++i){
      |                        ^
combo.cpp:74:26: error: 'n' was not declared in this scope
   74 |     if(press(ans+"A") == n)
      |                          ^
combo.cpp: In function 'std::string first_Letter_Y()':
combo.cpp:86:24: error: 'n' was not declared in this scope
   86 |     for(int i = 2; i < n; ++i){
      |                        ^
combo.cpp:96:26: error: 'n' was not declared in this scope
   96 |     if(press(ans+"B") == n)
      |                          ^