Question

acm一道很简单的数论题,求拯救

Answer 1

#include

#include

int num[20000];

int cmp(const void* a, const void* b)

{

return *((int*)a) - *((int*)b);

}

int main()

{

int i,n,sum;

while(scanf("%d",&n)==1)

{

sum = 0;

for(i=0;i