Time limit is -2sec in this question… wt is this i cnt undrstnd… I think my dis below code is smallest of all…still it showing time liimit exceeded… 
#include<stdio.h>
main()
{
int arr[1000000];
int m,a,b,i,count[1000000],n,q,j;
scanf("%d",&n);
scanf("%d",&q);
while(q)
{
scanf("%d %d %d", &m, &a, &b);
if(m==0)
{
for(i=a;i<=b;i++)
{
if(arr[i]==0)
{
arr[i]=1;
count[i]=1;
}
else if(arr[i]==1)
{
arr[i]=0;
count[i]=0;
}
else
{
arr[i]=1;
count[i]=1;
}
}
}
if(m==1)
{
j=0;
for(i=a;i<=b;i++)
{
if(count[i]==1)
{
j++;
}
}
printf("%d",j);
printf("\n");
}
q--;
}
return 0;
}