Submission #1002425

#	Time	Username	Problem	Language	Result	Execution time	Memory
1002425		zh_h	Combo (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#define lint long long
#define pb push_back
#define mp make_pair
using namespace std;

// int press(string p){
//     int temp;
//     cin >> temp;
//     return temp;
// }

string guess_sequence(int n){
    string one, two, three;

    string ans;

    //* find first letter
    if(press("AB") == 1){
        if(press("B") == 1){ans = "B"; one = "A"; two = "X"; three = "Y";}
        else{ans = "A"; one = "B"; two = "X"; three = "Y";}
        if(press("X") == 1){ans = "X"; one = "A"; two = "B"; three = "Y";}
        else{ans = "Y"; one = "A"; two = "B"; three = "X";}
    }

    int cur = 1;
    while(cur < n-1){
        int temp = press(ans+one + ans+two+one + ans+two+two + ans+two+three);

        if(temp == cur){ans+=three;}
        else if(temp == cur+1){ans+=one;}
        else{ans+=two;}

        cur++;
    }

    if(press(ans+one + ans+two) == n){
        if(press(ans+one) == n){return ans+one;}
        else return ans+two;
    }
    else return ans+three;
}


// int main() {
//     ios_base::sync_with_stdio(false);
//     cin.tie(NULL);

    
//     return 0;
// }

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:19:8: error: 'press' was not declared in this scope
   19 |     if(press("AB") == 1){
      |        ^~~~~
combo.cpp:28:20: error: 'press' was not declared in this scope
   28 |         int temp = press(ans+one + ans+two+one + ans+two+two + ans+two+three);
      |                    ^~~~~
combo.cpp:37:8: error: 'press' was not declared in this scope
   37 |     if(press(ans+one + ans+two) == n){
      |        ^~~~~
combo.cpp:14:12: warning: control reaches end of non-void function [-Wreturn-type]
   14 |     string one, two, three;
      |            ^~~