1825847_wa.c

北大大牛代码 1240道题的原代码 超级权威

# include <stdio.h>
# include <math.h>

long NO;

long f(long n)
{ 
	long tmp;
	if(n==1) {tmp = NO + 1; NO = 0;return tmp;}
	NO++;
	if(n%2) f(3*n+1);
    else f(n/2);
}

void main()
{
 int m, n, i;
 long max;
 while(scanf("%d %d",&m,&n) == 2)
 {
	 max = f(m);
     for(i = m + 1; i <= n; i++)
		 if(f(i) > max)
			 max = f(i);
		 printf("%d %d %ld\n",m,n,max);
	 
 }
}