HDU 5224 Tom and paper

Problem Description

There is a piece of paper in front of Tom, its length and width are integer. Tom knows the area of this paper, he wants to know the minimum perimeter of this paper.

Input

In the first line, there is an integer T indicates the number of test cases. In the next T lines, there is only one integer n in every line, indicates the area of paper.
T≤10,n≤109

Output

For each case, output a integer, indicates the answer.

Sample Input

3 2 7 12

Sample Output

14

直接暴力判断

#include<cstdio>
#include<cmath>
#include<queue>
#include<map>
#include<string>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
int T, n;

int main()
{
    scanf("%d", &T);
    while (T--)
    {
        scanf("%d", &n);
        int k = sqrt(1.0*n), ans = 0x7FFFFFFF;
        for (int i = 1; i <= k; i++)
            if (n%i == 0) ans = min(ans, 2 * (i + n / i));
        printf("%d\n", ans);
    }
    return 0;
}