1858889_wa.c

来自「北大大牛代码 1240道题的原代码 超级权威」· C语言 代码 · 共 15 行

# include <stdio.h>
# include <math.h>
# define e 2.7182818284590452354
void main()
{
  int n;
  double  M, N;
  scanf("%d",&n);
  while(n--)
  {
   scanf("%lf",&N);
   M = pow(N/e,N)*sqrt(4*asin(1)*N);
   printf("%ld\n",(long)log10(M)+1);
  }
}