bernoulli數

    LL B[N][2],C[N][N],f[N][2]; int n,m; LL gcd(LL a,LL b){return b?gcd(b,a%b):a;} LL lcm(LL a,LL b){return a/gcd(a,b)*b;} void getC(int n) { int i,j; n++; for(i=0;i<=n;i++)C[i][0]=C[i]

>>阅读原文<<