ll p;
ll kmul(ll a,ll b){ ll ans=0; for(;b;) { if(b&1) ans=(ans+a)%p; a<<=1; a%=p; b>>=1; } return ans%p;}
posted on 2017-09-15 11:07 chinacwj1 阅读(130) 评论(0) 编辑 收藏 举报
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