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就是一个普通的分解质因数吧...自己真的是没救了...就是把从a1到a10全部分解质因数,然后所有质因数+1相乘,不停的%10 我做法是跟筛素数一样,从2开始,判断每个素数因子有多少,然后+1*现在的答案,因为只考虑最后一位,那么不停的%10 #include <stdio.h> int i,k,n,j,s[12]; int main() { n=1; for(i=0;i<10;i++) scanf("%d",&s[i]); for(i=2;i<100;i++) { k=0; for(j=0;j<10;j++) { while(s[j]%i==0) { k++; s[j]/=i; } } n=(n*k+n)%10; } k=0; for(j=0;j<10;j++) if(s[j]>1) k++; n=(n*k+n)%10; printf("%d\n",n); return(0); } Followed by:
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