I am not able to figure out the error? can somebody please help me with this

#include<bits/stdc++.h>

using namespace std;

const int N = 2 * (1e5 + 5);

int boys[N];

int girls[N];

vector B;

vector G;

int fun(int a, int b, int k) {

```
for(int i = 0; i < k; i++) {
B.push_back(boys[i]);
G.push_back(girls[i]);
}
if(k < 2) return 0;
int ans = 0;
for(int i = 0; i < k - 1; i++) {
int one = B[i];
int two = G[i];
int x = count(B.begin() + i + 1, B.end(), one);
int y = count(G.begin() + i + 1, G.end(), two);
int cnt = k - (i + 1 + x + y);
ans += cnt;
}
B.clear();
G.clear();
return ans;
```

}

void solve() {

int a, b, k;

cin>>a>>b>>k;

```
for(int i = 0; i < k; i++) {
cin>>boys[i];
}
for(int j = 0; j < k; j++) {
cin>>girls[j];
}
cout<<fun(a, b, k)<<endl;
```

}

int main() {

int t;

cin>>t;

```
while(t--) solve();
return 0;
```

}

which problem?? send the link

My solution is on the top. Help me to rectify the error

You are recounting certain pairs. So, you need to maintain a frequency or degree for each boy and girl and then select the pairs.

Link to my submission:

Thanks a lot.