Tuenti Contest 9 (Pablo Moreno)

/*
    Author: Pablo Moreno Olalla
    Email address: darthbrevu@yahoo.es
*/
#include <cstdio>
#include <string>
#include <vector>
#include <sstream>
#include <iostream>
#include <algorithm>

using namespace std;

//This is an extremely simple problem!!

string noLights="All lights are off :(";

void solve(unsigned long I,unsigned long t,string &out) {
    if (t==0)   {
        out=noLights;
        return;
    }
    unsigned long furtherLight=t-1;
    bool even=(furtherLight%2==0);
    furtherLight=min(furtherLight,I-1);
    ostringstream oss("");
    for (unsigned long i=(even?0:1);i<=furtherLight;i+=2)   {
        oss<<i;
        if (i+2<=furtherLight) oss<<' ';
    }
    if (oss.str().size()==0) out=noLights;
    else out=oss.str();
}

int main(int argc,char **argv)  {
    //The first two lines are not strictly necessary, but make the code a little more handy.
    if (argc>=2) freopen(argv[1],"r",stdin);
    if (argc>=3) freopen(argv[2],"w",stdout);
    string tmp;
    unsigned int N,a,b;
    getline(cin,tmp);
    if (sscanf(tmp.c_str(),"%u",&N)!=1) return -1;
    for (size_t i=0;i<N;++i)    {
        do getline(cin,tmp); while (sscanf(tmp.c_str(),"%u",&a)!=1);
        do getline(cin,tmp); while (sscanf(tmp.c_str(),"%u",&b)!=1);
        solve(a,b,tmp);
        cout<<tmp<<endl;
    }
    return 0;
}