import sys
from time import clock
from array import array
def main():
    fin=open("in20_8.txt","r")
    start = clock()
    fout=open("out_28_20_8.txt","w")
    count=0
    list=[]
    pie_wt=array('i')
    rack_wt=array('i')
    
    for x in fin:

        if count==0:
            list=x.split(" ")
            tst=int(list[0])
            
        if count%3==1:
            list=x.split(" ")
            n=int(list[0])
            if(n < 0 and n > 30):
                print(" Number of pies should be positive and not greater than  30")
            
        if count%3==2:
            pie_wt=[]
            list=x.split(" ")
            for i in range(0,n):
                pie_wt.append(int(list[i]))

            for i in range(0,n):
                if(pie_wt[i] < 0 or pie_wt[i]>100):
                    print(" Weight of pie ",i+1," should be positive and less than 100")

            # Sorting the weights of pies
            pie_wt.sort()
            #print "pie wt",pie_wt
        
        if count%3==0 and count>0:
            rack_wt=[]
            list=x.split(" ")
            for i in range(0,n):
                rack_wt.append(int(list[i]))

            for i in range(0,n):
                if(rack_wt[i] < 0 or rack_wt[i] > 100):
                    print(" Maximum Weight of rack ",i+1," should be positive and less than 100")
                
            # Sorting rack weights
            rack_wt.sort()
            #print "rack wt",rack_wt
            
            num = 0
            j=0
            for i in range(0,n):
                while (j < n and pie_wt[i] > rack_wt[j]):
                    j=j+1

                if (j < n):
                    num=num+1
                    j=j+1
            fout.write(str(num))
            fout.write("\n")
        count=count+1
    end = clock()
    time= end - start
    fout.write("\n Total execuion time ="+ str(time)+ " seconds")
    m=sys.getsizeof(list)+sys.getsizeof(rack_wt)+sys.getsizeof(pie_wt)+sys.getsizeof(num)+sys.getsizeof(n)+sys.getsizeof(fin)+sys.getsizeof(fout)
    fout.write("\n Memory used= "+str(m)+" bytes")
    fin.close()
    fout.close()
main()