Submission #236057

#	Time	Username	Problem	Language	Result	Execution time	Memory
236057		pere_gil	Cave (IOI13_cave)	C++14	Compilation error	0 ms	0 KiB

cave

#include <iostream>
#include "cave.h"
using namespace std;

void exploreCave(int n)
{
    ///da 25pts
    /*
    int D[N],S[N];
    for(int i=0;i<N;i++){ S[i]=0; }

    if(tryCombination(S)==-1){
    for(int i=0;i<N;i++){
        S[i]=1;
        D[i]=tryCombination(S);
        S[i]=0;
    }
    }

    else{
    for(int i=0;i<N;i++){
        D[i]=i;
        if(tryCombination(S)==i) S[i]=1;
    }
    }

    answer(S,D);
    */

    bool nochange[n];
    for(int i=0;i<n;i++) nochange[i]=false;
    int dosw[n];
    int onoff[n];

    for(int i=0;i<n;i++){
        int exp[n];
        for(int j=0;j<n;j++){
            if(nochange[j]) exp[j]=onoff[j];
            else exp[j]=1;
        }
    }

    int trycom=tryCombination(exp);
    int good=0;
    if(trycom==-1 or trycom>i){
        good=1;
    }

    ///ahora se viene lo chido binary
    int iz=0,der=n-1;
    while(iz<der){
        int media=(der+iz)/2;
        for(int i=iz;i<=media;i++){
            if(nochange[i]) exp[i]=good;
            else exp[i]=1-good;
        }

        trycom=tryCombination(exp);
        if(trycom==-1) der=media;
        else iz=media+1;
    }

    nochange[iz]=true;
    dosw[iz]=i;
    onoff[iz]=good;

    answer(onoff,dosw);
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:36:13: warning: variable 'exp' set but not used [-Wunused-but-set-variable]
         int exp[n];
             ^~~
cave.cpp:43:31: error: 'exp' was not declared in this scope
     int trycom=tryCombination(exp);
                               ^~~
cave.cpp:43:31: note: suggested alternative: 'exit'
     int trycom=tryCombination(exp);
                               ^~~
                               exit
cave.cpp:45:29: error: 'i' was not declared in this scope
     if(trycom==-1 or trycom>i){
                             ^
cave.cpp:64:14: error: 'i' was not declared in this scope
     dosw[iz]=i;
              ^
cave.cpp:64:14: note: suggested alternative: 'iz'
     dosw[iz]=i;
              ^
              iz