Submission #5812

#	Time	Username	Problem	Language	Result	Execution time	Memory
5812		model_code	팩토리얼 세제곱들의 합 (YDX14_fact)	C11	1 / 1	0 ms	1088 KiB

fact

#include <stdio.h>

int pow1000 (int a,int n)
{
int p=1,i;
for (i=0;i<n;i++) p=(p*a)%1000;
return (p);
}


int facts[]={1,1,2,6,24};

main()
{
int i,n,k,ans=0;

scanf ("%d %d",&n,&k);

if (k==0) ans=n+1;
else 
{
if (n>5) n=4;

for (i=0;i<=n;i++)
 ans=(ans+pow1000 (facts[i],k))%1000;
}

if (ans%10) printf ("%d\n",ans%10);
 else if (ans%100) printf ("%d\n",(ans/10)%10);
  else printf ("%d\n",(ans/100)%10);

return (0);
}

• Subtask 1: 1 / 1