n=int(input())
ls=[]
for i in range(n):
ls.append(list(map(int,input().split())))
sub=[]
bus=[]
money=0
for each in ls:
if each[0]==0:
sub.append((each[1],each[2]))
money+=each[1]
if each[0]==1:
bus.append((each[1],each[2]))
money+=each[1]
for b in bus:
for a in sub:
if a[0]>=b[0] and 0<b[1]-a[1]<=45:
money-=b[0]
break
print(money)
