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Re:OMS的是怎么过的呀?

Posted by conanhjj at 2008-10-05 13:06:12 on Problem 1218
In Reply To:OMS的是怎么过的呀? Posted by:druse at 2008-05-24 21:03:52

我也是强做的 0MS过。。用的是<bitset>
bitset<n> b;

b.reset();
for(step=1;step<=n;++step)
{
    for(j=step;j<=n;j+=step)
	b.flip(j);	
}
printf("%d\n",b.count());

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