Submission #1291604

#	Time	Username	Problem	Language	Result	Execution time	Memory
1291604		trandangquang	Combo (IOI18_combo)	C++20	Compilation error	0 ms	0 KiB

combo

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

#define foru(i,a,b) for(int i=(a); i<=(b); ++i)
#define ford(i,a,b) for(int i=(a); i>=(b); --i)
#define rep(i,a) for(int i=0; i<(a); ++i)
#define sz(a) (int)(a).size()
#define all(a) (a).begin(),(a).end()
#define bit(s,i) (((s)>>(i))&1)
#define ii pair<int,int>
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define ll long long
#define _ << " " <<

template <class X, class Y> bool maxi(X &x, Y y){return x<y?x=y,true:false;}
template <class X, class Y> bool mini(X &x, Y y){return x>y?x=y,true:false;}


string guess_sequence(int n){
    string res;

    string t;
    if(press("AB"))t="AB";
    else t="XY";

    char c;
    if(press(t.substr(0,1))) c=t[0];
    else c=t[1];

    string h;
    for(char ch:"ABXY") if(ch!=c) h=h+c;

    res=res+c;
    foru(i,2,n-1){
        int tmp=press(res+h[0]+h[0]+c+res+h[0]+h[1]+c+res+h[0]+h[2]+c+res+h[1]);
        if(tmp==i-1) res=res+h[2];
        else if(tmp==i) res=res+h[1];
        else if(tmp==i+1) res=res+h[0];
        else assert(0);
    }

    c=h[0];
    if(press(res+h[1])==n)c=h[1];
    if(press(res+h[2])==n)c=h[2];
    res=res+c;
    return res;
}

//int press(int p){
//
//}

//int32_t main(){
//    #define task "test"
//    if(fopen(task".inp","r")){
//        freopen(task".inp","r",stdin);
//        freopen(task".out","w",stdout);
//    }
//    cin.tie(0)->sync_with_stdio(0);
//
//    int tc=1; //cin>>tc;
//    rep(i,tc){
//        solve();
//    }
//}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:26:8: error: 'press' was not declared in this scope; did you mean 'res'?
   26 |     if(press("AB"))t="AB";
      |        ^~~~~
      |        res
combo.cpp:30:8: error: 'press' was not declared in this scope; did you mean 'res'?
   30 |     if(press(t.substr(0,1))) c=t[0];
      |        ^~~~~
      |        res
combo.cpp:38:17: error: 'press' was not declared in this scope; did you mean 'res'?
   38 |         int tmp=press(res+h[0]+h[0]+c+res+h[0]+h[1]+c+res+h[0]+h[2]+c+res+h[1]);
      |                 ^~~~~
      |                 res
combo.cpp:46:8: error: 'press' was not declared in this scope; did you mean 'res'?
   46 |     if(press(res+h[1])==n)c=h[1];
      |        ^~~~~
      |        res
combo.cpp:47:8: error: 'press' was not declared in this scope; did you mean 'res'?
   47 |     if(press(res+h[2])==n)c=h[2];
      |        ^~~~~
      |        res