Integer Points

#include <iostream>
#include <vector>

using namespace std;

int main(){
    int a;
    cin >> a;

    long long contpair1 =0;
    long long contnopair1 =0;
    for(int i=0; i<a; i++){
        int temp;
        cin >> temp;
        if(temp%2==0)contpair1+=1;
        else contnopair1 +=1;
    }

    int b;
    cin >> b;

    long long contpair2 =0;
    long long contnopair2 =0;
    for(int i=0; i<b; i++){
        int temp;
        cin >> temp;
        if(temp%2==0)contpair2+=1;
        else contnopair2 +=1;
    }
    
    // cout << contpair1 <<" "<<contpair2 << endl;
    // cout << contnopair1 <<" "<<contnopair2 << endl;
    cout << ((contpair1*contpair2) + (contnopair1*contnopair2)) << endl;

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED