摘要： 描述 Please calculate the coefficient modulo 2 of x^i in (1+x)^n. 输入 For each case, there are two integers n, i (0<=i<=n<=2^31-1) 输出 For each case, print the coefficient modulo 2 of x^i in (1+x)^n on a single line. 样例输入 3 1 4 2 样例输出 1 0 阅读全文