bài 1:

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N=105;
int b[N];
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>b[i];//Nhap vao danh sach B
	}
	int sumOdd=0,cnt=0;
	for(int i=1;i<=n;i++){
		if(b[i]<0)++cnt;
		else if(b[i]%2==1)sumOdd+=b[i];
	}
	cout<<sumOdd<<"\n"<<cnt;
}

bài 2:

#include <bits/stdc++.h>
using namespace std;
#define int long long
int gcd(int a,int b){
	if(b==0)return a;
	return gcd(b,a%b);
}
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int m,n;
	cin>>m>>n;
	cout<<gcd(m,n);
}

bài 3:

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	string s;
	getline(cin,s);
	cout<<"Ho:";
	int i;
	for(i=0;s[i]!=' ';i++){
		cout<<s[i];
	}
	cout<<"\n";
	cout<<"Ten:";
	for(;i<s.size();i++){
		cout<<s[i];
	}
}

bài 4;

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin>>n;
	int cnt=0;
	for(int i=1;i<=n;i++){
		int x;
		cin>>x;
		if(x%2==0)++cnt;
	}
	cout<<cnt;
}

bài 5:

#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin>>n;
	vector<int>vtEven,vtOdd;
	for(int i=1;i<=n;i++){
		int x;
		cin>>x;
		if(x%2==0)vtEven.push_back(x);
		else vtOdd.push_back(x);
	}
	cout<<"Cac phan tu chan:";
	for(int i=0;i<vtEven.size();i++)cout<<vtEven[i]<<" ";
	cout<<"\nCac phan tu le:";
	for(int i=0;i<vtOdd.size();i++)cout<<vtOdd[i]<<" ";
}

Bài 1

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, res = 0, summ = 0;
    cin >> n;
    int temp;
    for (int i = 0; i < n; i++) {
        cin >> temp;
        if(temp % 2) summ += temp;
        if(temp < 0) res++;
    }
    cout << summ << " " << res;
}

Bài 2:

int ucln(int a, int b) {
    if (b == 0) return a;
    return ucln(b, a % b);
}

Bài 3:

#include <bits/stdc++.h>
using namespace std;

int main() {
    string hoten, hodem = {}, ten = {};
    getline(cin, hoten);
    for (int i = hoten.length() - 1; i >= 0; i--) {
        if (hoten[i] == ' ') {
            hodem = hoten.substr(0, i);
            ten = hoten.substr(i + 1);
            break;
        }
    }
    cout << hodem << "\n" << ten;
}

 Bài 4:

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, temp;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> temp;
        if(!temp % 2) cout << temp << " ";
    }
}

Bài 5:

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, temp, countt = 0;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> temp;
        if(temp % 2) countt++;
    }
    cout << countt << " " << n - countt;
}