Puppy y Sum CodeChef Solución
t=int(input())
for i in range(t):
d,n=map(int,input().split())
for i in range(d):
b=n*(n+1)/2
n=b
print(int(b))
Homeless Hawk
t=int(input())
for i in range(t):
d,n=map(int,input().split())
for i in range(d):
b=n*(n+1)/2
n=b
print(int(b))