-
Notifications
You must be signed in to change notification settings - Fork 479
/
1535B.cpp
47 lines (43 loc) · 1 KB
/
1535B.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
//🎃🎃🎃😎😎😁🤓☣☣☣☣☣dark_coder☣☣☣☣☣😎😎😁🤓🎃🎃🎃
#include <bits/stdc++.h>
using namespace std;
#define IOS \
ios::sync_with_stdio(0); \
cin.tie(0); \
cout.tie(0);
#define all(x) (x).begin(), (x).end()
#define li long long int
#define pi pair<int, int>
int gcd(int a, int b)
{
if (a == 0)
return b;
return gcd(b % a, a);
}
int main()
{
IOS int t;
cin >> t;
while (t--)
{
int n;
cin >> n;
vector<int> v(n);
for (int i = 0; i < n; i++)
{
cin >> v[i];
}
sort(all(v), [](int x, int y)
{ return x % 2 < y % 2; });
int ct=0;
for (int i = 0; i < n; i++)
{
for (int j = i+1; j < n; j++)
{
ct+=gcd(v[i],v[j]*2)>1;
}
}
cout<<ct<<endl;
}
return 0;
}