Submission #993103

#	Time	Username	Problem	Language	Result	Execution time	Memory
993103		Yazan_SA	Cave (IOI13_cave)	C++17	Compilation error	0 ms	0 KiB

cave

#include "cave.h"

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

// int n=8,tot;
// int S[]={1,1,0,1,1,0,0,0};
// int D[]={5,2,7,6,0,3,4,1};
// int F[8]={};

// int tryCombination(int s[]){
//     for(int i=0; i<n; i++){
//         F[D[i]]=i;
//     }
//     tot++;
//     int ac=0;
//     for(int i=0; i<n; i++){
//         if(s[F[i]]==S[F[i]])ac=i;
//         else break;
//     }
//     return (ac==n-1 ? -1 : ac);
// }
// int n2;
// int ask(int x[]){
//     int ts=tryCombination(x)+1;
//     return (ts==0 ? n2 : ts);
// }

// void answer(int s[], int d[]){
//     cout<<"try: \n";
//     for(int i=0; i<n; i++)cout<<s[i]<<' ';cout<<'\n';
//     for(int i=0; i<n; i++)cout<<S[i]<<' ';cout<<'\n';
//     cout<<endl;
//     cout<<"try: \n";
//     for(int i=0; i<n; i++)cout<<d[i]<<' ';cout<<'\n';
//     for(int i=0; i<n; i++)cout<<D[i]<<' ';cout<<'\n';
    
//     if(ask(s)==n)cout<<"YES";
//     else cout<<"NO";
//     cout<<endl<<tot;
// }



void exploreCave(int N) {
    n2=N;
    int d[N]={},s[N]={};
    bool dn[N]={};
    if(N==1){
        if(ask(s)!=1)s[0]=1;
        answer(s,d);
        return;
    }
    int ts=ask(s),ts2;
    for(int i=0; i<N; i++){
        int l=0,r=N-1;
        while(l<=r){
            if(l==r){
                // cout<<"FOUND "<<i<<" in "<<l<<endl;
                dn[l]=1;
                d[l]=i;
                // s[l]^=1;
                if(ts2<=i)s[l]^=1;
                ts=ask(s);
                break;
            }
            int md=(l+r)/2;
            for(int j=l; j<=md; j++){
                if(dn[j])continue;
                s[j]^=1;
            }
            ts2=ask(s);
            // cout<<ts<<" # "<<l<<' '<<md<<' '<<r<<" !! ";for(int i=0; i<N; cout<<s[i++]<<' ');cout<<"!! "<<ts2<<endl;
            // for(int j=l; j<=md; j++){
            //     if(dn[j])continue;
            //     s[j]^=1;
            // }
            if((ts<=i && ts2>=i+1) || (ts>=i+1 && ts2<=i)){
                r=md;
                ts=ts2;
            }
            else{
                l=md+1;
            }
            
        }
    }
    answer(s,d);
}




// signed main(){
//     // n=10;
//     exploreCave(n);
// }

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:46:5: error: 'n2' was not declared in this scope
   46 |     n2=N;
      |     ^~
cave.cpp:50:12: error: 'ask' was not declared in this scope
   50 |         if(ask(s)!=1)s[0]=1;
      |            ^~~
cave.cpp:54:12: error: 'ask' was not declared in this scope
   54 |     int ts=ask(s),ts2;
      |            ^~~
cave.cpp:63:20: error: 'ts2' was not declared in this scope; did you mean 'ts'?
   63 |                 if(ts2<=i)s[l]^=1;
      |                    ^~~
      |                    ts
cave.cpp:72:13: error: 'ts2' was not declared in this scope; did you mean 'ts'?
   72 |             ts2=ask(s);
      |             ^~~
      |             ts