通过面积求周长......

 1 #include <stdio.h>
 2 
 3 int main()
 4 {
 5     int T;
 6     scanf("%d",&T);
 7     while(T--)
 8     {
 9         int S,sum=10000,k=0;
10         scanf("%d",&S);
11         for(int x=1; x<=S; x++)
12         {
13             if(S%x==0&&sum>=(x+S/x))
14                 sum=x+S/x;
15         }
16         printf("%d\n",2*sum);
17     }
18     return 0;
19 }

 1 #include<cstdio>
 2 #include<cmath>
 3 int main()
 4 {
 5     int t,s,n;
 6     scanf("%d",&t);
 7     while(t--)
 8     {
 9         scanf("%d",&s);
10         n=(int)sqrt((double) s);
11         while(s%n)
12            {
13                //printf("%d\n",n);
14                 n--;
15            }
16         n=2*(n+s/n);
17     printf("%d\n",n);
18     }
19 return 0;
20 }