求\ (\ sum_ {i = 1} ^ nC_n ^ iQ ^ i \ sum_ {j = 1} ^ ij ^ k, k \ in3e3, n, Q \ in1e9 \)
Buscando \ ((\ x_i suma) ^ m \) deseado, \ (x_i \ in [0, a_i] \)
求\ (\ sum_ {i = 1} ^ nC_n ^ iQ ^ i \ sum_ {j = 1} ^ ij ^ k, k \ in3e3, n, Q \ in1e9 \)
Buscando \ ((\ x_i suma) ^ m \) deseado, \ (x_i \ in [0, a_i] \)