摘要:
#includeint a[2000001];int main(){ int i,j,n; for(i=2;i<=2000000;i++) { if(!a[i]) //未被标记 for(j=i+i;j<=2000000;j+=i) //素数的倍数不是... 阅读全文
摘要:
Alexandra and Prime Numbers Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Problem DescriptionAlexandra has a little ... 阅读全文