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牛乎,错乎,咋乎?测乎?Who牛乎?帮Me测乎?import java.io.*;
import java.util.*;
public class Main
{
private int total=0;
private int temp=0;
private int weightings=0;
private boolean Is_first=true;
private boolean Unequal=false;
private int data[]=null;
private int value[]=null;
private char ch;
public static void main(String args[])
{
new Main();
}
public Main()
{
Scanner in=new Scanner(System.in);
total=in.nextInt();
weightings=in.nextInt();
data=new int[total];
value=new int[total];
int i=0;
while(i<weightings)
{
temp=in.nextInt();
for(int j=0;j<2*temp;j++)
{
value[j]=in.nextInt();
}
String s=null;
while((s=in.nextLine()).equals("")||s==null);
ch=s.charAt(0);
for(int j=0;j<2*temp;j++)
{
switch(ch)
{
case '>':
if(Is_first)
{
if(j<temp)
{
data[value[j]-1]=2;
}
else
{
data[value[j]-1]=1;
}
}
else
{
if(j<temp&&data[value[j]-1]!=2)
{
data[value[j]-1]=-1;
}
else if(j>=temp&&data[value[j]-1]!=1)
{
data[value[j]-1]=-1;
}
}
Unequal=true;
break;
case '<':
if(Is_first)
{
if(j<temp)
{
data[value[j]-1]=1;
}
else
{
data[value[j]-1]=2;
}
}
else
{
if(j<temp&&data[value[j]-1]!=1)
{
data[value[j]-1]=-1;
}
else if(j>=temp&&data[value[j]-1]!=2)
{
data[value[j]-1]=-1;
}
}
Unequal=true;
break;
case '=':
data[value[j]-1]=-1;
Unequal=false;
break;
}
}
i++;
if(Is_first&&Unequal)
{
Is_first=false;
}
else if(Unequal)
filter();
}
print();
}
private void filter()
{
for(int j=0;j<total;j++)
{
if(data[j]==1||data[j]==2)
{
if(find(j+1))
data[j]=-1;
}
}
}
private boolean find(int i)
{
for(int j=0;j<2*temp;j++)
{
if(value[j]==i)
return false;
}
return true;
}
private void print()
{
int i=-1;
int x=-1;
for(int j=0;j<total;j++)
{
if(data[j]==0&&i==-1)
{
i=j+1;
}
else if(data[j]>=1)
{
if(i==-1)
i=j+1;
else if(data[i-1]>0)
{
System.out.println(0);
return;
}
}
}
if(i==-1)
System.out.println(0);
else
System.out.println(i);
}
}
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