출처 : SW Expert 아카데미
<풀이>
T = int(input())
for i in range(1,T+1):
print('#'+str(i))
x = int(input())
y = ''
start = 0
for j in range(x):
n, m = map(str, input().split())
y+= n*int(m)
for k in range(1,(len(y)//10)+1):
print(y[start:10*k])
start += 10
print(y[start:])