Integer Points

input/code.cpp: In function 'int main()':
input/code.cpp:14:19: warning: comparison of integer expressions of different signedness: 'int' and 'ull' {aka 'long long unsigned int'} [-Wsign-compare]
   14 |     for(int i=0; i<n; i++){
      |                  ~^~
input/code.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'ull' {aka 'long long unsigned int'} [-Wsign-compare]
   25 |     for(int i=0; i<m; i++){
      |                  ~^~

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);

    ull n;
    cin >> n;

    set<ll> cs;
    for(int i=0; i<n; i++){
        ll c;
        cin >> c;
        cs.insert(c);
    }

    ll cso = count_if(cs.begin(), cs.end(), [](ll c){ return c%2; });

    ull m;
    cin >> m;
    set<ll> cs2;
    for(int i=0; i<m; i++){
        ll c;
        cin >> c;
        cs2.insert(c);
    }

    ll cs2o = count_if(cs2.begin(), cs2.end(), [](ll c){ return c%2; });

    // cout << "this: " << cso << " " << cs2o << "\n";

    // cout << (cs.size() * cs2.size()) << "\n";
    cout << (cs2o * cso + (n - cso) * (m - cs2o)) << "\n";
}

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