num=int(input())
emp=[]
cnt=0
for i in range(num):
    emp.append(num)
    emp[i]=[int(k) for k in input().split()]
for i in range(num):
    for q in range(i+1,num):
        if emp[i][0]==emp[q][0]:
            emp[i][1]=emp[i][1]+emp[q][1]
            emp[i][2]=emp[i][2]+emp[q][2]
            emp[q][1],emp[q][2]=0,0
    if emp[i][1]*emp[i][2]>=1000000:
        print(emp[i][0])
        cnt+=1
if cnt==0:
    print('NA')