# Venue arrangement problems (Greedy)

Source: Internet
Author: User

/* Date: 2011-10-17
Author: xiaosi
Question: Venue arrangement (Greedy)
Question link: http://acm.nyist.net/JudgeOnline/problem.php? PID = 14
*/
# Include <iostream>
# Include <cstdio>
# Include <stdlib. h>
Using namespace STD;
Struct Activity
{
Int begin;
Int end;
} A [10000];
Int CMP (const void * a, const void * B)
{
Struct activity * c = (activity *);
Struct activity * D = (activity *) B;
Return C-> end-D-> end;
}
Int selector (activity a [], int N)
{
Int I, j = 0, Count = 1;
For (I = 1; I <n; I ++)
{
If (A [I]. Begin> A [J]. End)
{
Count ++;
J = I;
}
}
Return count;
}
Int main ()
{
Int N;
While (scanf ("% d", & N )! = EOF)
{
While (n --)
{
Int N, I;
Scanf ("% d", & N );
For (I = 0; I <n; I ++)
{
Scanf ("% d", & A [I]. Begin, & A [I]. End );
}
Qsort (A, N, sizeof (A [0]), CMP );
Printf ("% d \ n", selector (A, n ));
}
}
}

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