<swustoj>?id=30 细菌的繁殖

链接http://acm.swust.edu.cn/problem/0030/

#include <stdio.h>
int main()
{
    int Case;
    int day;
    scanf("%d",&Case);
    while(Case--)
    {
        scanf("%d",&day);
        printf("%d\n",2*(day-1)*(day-1)+2*day-1);
    }
    return 0;
}