hdu 5224 Tom and paper

题目连接

http://acm.hdu.edu.cn/showproblem.php?pid=5224

Tom and paper

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.

$T\leq 10,n\leq {10}^{9}$

Output

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

Sample Input

3
2
7
12

Sample Output

6
16
14

 1 #include<algorithm>

 2 #include<iostream>

 3 #include<cstdlib>

 4 #include<cstring>

 5 #include<cstdio>

 6 #include<vector>

 7 #include<map>

 8 using std::min;

 9 using std::cin;

10 using std::cout;

11 using std::endl;

12 using std::find;

13 using std::sort;

14 using std::map;

15 using std::pair;

16 using std::vector;

17 using std::multimap;

18 #define pb(e) push_back(e)

19 #define sz(c) (int)(c).size()

20 #define mp(a, b) make_pair(a, b)

21 #define all(c) (c).begin(), (c).end()

22 #define iter(c) decltype((c).begin())

23 #define cls(arr,val) memset(arr,val,sizeof(arr))

24 #define cpresent(c, e) (find(all(c), (e)) != (c).end())

25 #define rep(i, n) for (int i = 0; i < (int)(n); i++)

26 #define tr(c, i) for (iter(c) i = (c).begin(); i != (c).end(); ++i)

27 const int Max_N = 100010;

28 const int INF = ~0u >> 1;

29 typedef unsigned long long ull;

30 void solve(int n) {

31     int ans = INF;

32     for (int i = 1; (ull)i * i <= n; i++) {

33         if (n % i == 0) ans = min(ans, (i + n / i) << 1);

34     }

35     printf("%d\n", ans);

36 }

37 int main() {

38 #ifdef LOCAL

39     freopen("in.txt", "r", stdin);

40     freopen("out.txt", "w+", stdout);

41 #endif

42     int t, n;

43     scanf("%d", &t);

44     while (t--) {

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

46         solve(n);

47     }

48     return 0;

49 }

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