#1126. a!+b!=?
a!+b!=?
Background
求a!+b!=? 阶乘:1!=1 3!=1* 2* 3 N!=1* 2 * 3 * 4*……*(N-1)*N
Samples
4 5
144
Limitation
1s, 1024KiB for each test case.
求a!+b!=? 阶乘:1!=1 3!=1* 2* 3 N!=1* 2 * 3 * 4*……*(N-1)*N
4 5
144
1s, 1024KiB for each test case.