Food chain POJ 1182 (and check set)

Description

There are three types of animal a,b,c in the animal kingdom, and the food chain of these three animals is an interesting ring. A eat B, B eat c,c eat a.
Existing n animals, numbered with 1-n. Every animal is one of the a,b,c, but we don't know what it is.
Some people describe the food chain relationship between these n animals in two ways:
The first argument is "1 x y", which means that x and Y are homogeneous.
The second argument is "2 x y", which means x eats y.
This person to n animals, with the above two statements, a sentence after sentence to say K sentence, this k sentence some is true, some false. When one sentence satisfies one of the following three, the sentence is a lie, otherwise it is the truth.
1) The current words conflict with some of the preceding words, which is false;
2) The current word in x or y is greater than N, is a lie;
3) The current words say x eats x, is a lie.
Your task is to output the total number of falsehoods according to the given N (1 <= n <= 50,000) and the K-sentence (0 <= K <= 100,000).

Input

The first line is two integers n and K, separated by a single space.
The following k lines each line is three positive integer d,x,y, and two numbers are separated by a space, where D denotes the kind of claim.
If d=1, it means that x and Y are homogeneous.
If d=2, it means x eats y.

Output

There is only one integer that represents the number of false lies.

Sample Input

100 71 101 1 2 1 22 2 3 2 3 3 1 1 3 2 3 1 1 5 5

Sample Output

3

problem-solving ideas: This problem wants us to get the number of lies, if this is the words and previous words conflict is a lie . I began to have no idea, looked at the sample, readily draw a picture, feel like a graph theory of things, but in fact, think carefully, in fact, this is a state of division!!! For example, A and B are similar relationships, then divide A and b into a set, and then say that A and B is the predator-prey relationship must be a lie. But the problem is that the role of an animal in the food chain is not certain, that a species may be a predator or a predator, and possibly a relationship between its peers. All of the three states played are represented. GCA, for species x,x represents Class A, X+n represents Class B, x+2n represents Class C, where a eats b,b eats c,c eats a.

For the two animals, if they are of the same kind, there must be no predation and predation, and if there is a predator-prey relationship, there must be no predator-prey and similar relationships.

1#include <cstdio>2#include <cstring>3#include <algorithm>4 #defineMAX 50010*35 using namespacestd;6 intPre[max];7 intFind (intx)8 {9     intA;TenA=x; One      while(pre[a]!=a) A     { -A=Pre[a]; -     } the     returnA; - } - voidUnion (intROOT1,intRoot2) - { +     intx, y; -x=Find (ROOT1); +y=Find (ROOT2); A     if(x!=y) at     { -pre[x]=y; -     } - } - intSame (intXintY///determine whether two species have a relationship - { in     returnFind (x) = =Find (y); - } to intMain () + { -     intn,m,i,counts; the     inta,b,q; *scanf"%d%d",&n,&m); $counts=0;Panax Notoginseng      for(i=1; i<=n*3; i++) -     { thepre[i]=i; +     } A      for(i=1; i<=m;i++) the     { +scanf"%d%d%d",&q,&a,&b); -         if(a<1|| a>n| | b<1|| B>N) $         { $counts++; -             Continue; -         } the         if(q==1) -         {Wuyi             if(Same (a,b+n) | | Same (a,b+2*n))///there is a predator or prey relationship . the             { -counts++; Wu             } -             Else///establishing similar relationships About             { $ Union (A, b); -Union (a+n,b+n); -Union (A +2*n,b+2*n); -             } A         } +         Else if(q==2) the         { -             if(Same (A, b) | | Same (a,b+2*n))///there is a similar or predatory relationship $             { thecounts++; the             } the             Else///establish all the predator-prey relationships the             { -Union (a,b+n); inUnion (a+n,b+2*n); theUnion (A +2*n,b); the             } About         } the     } theprintf"%d\n", counts); the     return 0; +}

2. When they're the same, they're not prey or prey.
4. when they're prey, they're not the same or prey .

Food chain POJ 1182 (and check set)