Submission #518942

#	Time	Username	Problem	Language	Result	Execution time	Memory
518942		omohamadooo	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ll long long
#define pb push_back
#define endl '\n'
#define pii pair<ll,ll >
#define F first
#define S second
#define double long double
#define all(x) (x).begin(),(x).end()

using namespace std;
using namespace __gnu_pbds;

typedef tree<ll , null_type , less<ll> ,rb_tree_tag ,tree_order_statistics_node_update >ordered_set;

const int MOD=1e9+7 ;
const int  N=4e6+7;
const ll INF= 1e18+10;

ll po(ll x,ll y)
{
    ll ans = 1;
    while(y){
        if( y & 1 ) ans *=x;
        y /= 2;
        x *=x;
        //x %= MOD;
        //ans %= MOD;
    }
    return ans;
}

string guess_sequence(int n)
{
    string s;

    char c;
    if(press("AB")){
        if(press("A")) c ='A';
        else c = 'B';
    }
    else{
        if(press("X")) c= 'X';
        else c = 'Y';
    }
    s += c;
    string t;
    if(c != 'A') t += 'A';
    if(c != 'B' ) t += 'B';
    if(c != 'X') t += 'X';
    if(c != 'Y') t += 'Y';
    for(ll i= 2;i<n;i++){
        string que = s;
        for(ll j= 0;j<3;j++){
            que += t[0];
            que += t[j];
            que += s;
        }
        que += t[1];
        ll ans = press(que);
        if(ans == i+1) s += t[0];
        else if(ans == i) s += t[1];
        else s += t[2];
    }
    if(press(s + t[0] + s + t[1]) == n ){
        if(press(s + t[0])) s += t[0];
        else s += t[1];
    }
    else s += t[2];

    return s;
}

/*
int main(){
    //ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	//freopen("dishes.in" , "r" , stdin);freopen("dishes.out" , "w" , stdout);
	int t = 1;
    //cin >> t;
	//while(t--) {solve() ; }
}
*/

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:40:8: error: 'press' was not declared in this scope
   40 |     if(press("AB")){
      |        ^~~~~
combo.cpp:62:18: error: 'press' was not declared in this scope
   62 |         ll ans = press(que);
      |                  ^~~~~
combo.cpp:67:8: error: 'press' was not declared in this scope
   67 |     if(press(s + t[0] + s + t[1]) == n ){
      |        ^~~~~