Time Limit Exceeded : BYTEISLE problem

I am a beginner and I want to optimize my code to the problem given in title
Link to the problem is : http://www.codechef.com/problems/BYTEISLE
My code is the following in c++ :

#include
using namespace std;
int main()
{
int total,no_knights,a[50001]={0},b[50001]={0},no_byte,Case=0,slash = 0;
int ansi;
char c=‘1’,ansc[50001],temp[50001];
scanf("%d",&total);
while(Case<total)
{ //int swap = 0;
scanf("%d",&no_byte);
//if(Case==0)
for(int i=0;i<no_byte;i++)
{ slash=0;
if(i==0)
getchar_unlocked();
c=‘a’;
while(c!=’\n’)
{

							c=getchar_unlocked();
                                                    
							
								if(c!=' ' && slash==0)
								{
									a[i]=a[i]*10+(c-48);
								}
							else if(slash == 1 && c!=' ' && c!='\n')
								{
								       b[i]=b[i]*10+(c-48); 	       
								}
								if(c==' ')slash++;
						}//while loop
			}
                    	ansi=0;
			for(int no_knights=0;no_knights<=no_byte;no_knights++)
                            {      int count = 0,swap=0;
                                    
                                  	for(int i=0;i<no_byte;i++)
				{                  
                                           
                                            
				        if(a[i]<=no_knights && b[i]>=no_knights)
					{      
						count++;
						if(ansi==0)
						ansc[i]='1';
						else temp[i]='1';
					}
					else
					{
						if(ansi==0)ansc[i]='0';
						else temp[i]='0';
					}
					if(ansc[i]>temp[i] && ansi>0)swap++;
                                            if(count>no_knights){i=no_byte;break;}
				}//for loop
				
				if(count== no_knights)
                                    {    
                                        ansi++;
				if(swap == 1)
				{     
					int k=0;
						do
						{
							ansc[k]=temp[k];k++;
						}while(k<no_byte);
				}
                                    }
			}//no knights
                            printf("%d\n%s",ansi,ansc);
			Case++;
       }

return 0;
}

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