import sys
i = 0

for line in sys.stdin:
    b = 0
    a = line.split()
    if i == 0:
        x = a[0]
    elif i % 2 == 1:
        y = int(a[0])
    else:
        for j in range(y):
            b += int(a[j])
        print(b)
    i += 1