acmer之路（4）四月第二周日志

#include<stdio.h>  
    int main()
{
    int n;
    int i;
    __int64 coeficient1, coeficient2;
    __int64 count;
    __int64 temp;
    while (scanf("%d", &n) != EOF)
    {
        count = 0;
        coeficient1 = 2;
        coeficient2 = 1;
        if (n == 1)
        {
            printf("3\n");
        }
        else
        {
            for (i = 1; i < n; i++)
            {
                temp = coeficient1;
                coeficient1 = 2 * coeficient1 + 2 * coeficient2;
                coeficient2 = temp;
                count = coeficient1 + coeficient2;
            }
            printf("%I64d\n", count);
        }
    }
    return 0;
}

#include<stdio.h>

int main()

{

__int64 s[10001]; 

    int i,T,n;

scanf("%d",&T);

while(T--)

{

s[0]=1;

scanf("%d",&n);

for(i=1;i<=n;i++)

s[i]=s[i-1]+4*(i-1)+1;

printf("%I64d\n",s[i-1]);

}

return 0;

}