题解 | 特殊乘法
while True:
try:
a,b = input().split()
s = 0
for i in a:
for j in b:
s = s+int(i)*int(j)
print(s)
except:
break
while True:
try:
a,b = input().split()
s = 0
for i in a:
for j in b:
s = s+int(i)*int(j)
print(s)
except:
break
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