플리나를 위하여

#include <iostream>
using namespace std;

void BAEKJOON_15552()
{
    cin.tie(NULL);
    std::ios_base::sync_with_stdio(false);
 
    int T;
    int A, B;
     
    cin >> T;
    for (int i = 0; i < T; i++)
    {
        cin >> A >> B;
        cout << A + B << "\n";
    }
    return;
}

#include <iostream>
using namespace std;
// 공식 미적용
void BAEKJOON_8393()
{
	int n;
	cin >> n;

	int sum = 0;
	for (int i = 1; i <= n; i++)
	{
		sum += i;
	}
	cout << sum;

	return;
}
// 공식 적용
void BAEKJOON_8393()
{
	int n;
	cin >> n;

	int sum = n % 2 ? (n + 1) / 2 * n : n / 2 * (n + 1);
	cout << sum;

	return;
}

#include <iostream>
using namespace std;

void BAEKJOON_10950()
{
    int T;
    cin >> T;
 
    for (int i = 0; i < T; i++)
    {
        int A;
        int B;
        cin >> A >> B;
        cout << A + B << endl;
    }
 
    return;
}

#include <iostream>
using namespace std;

void BAEKJOON_10817()
{
    int A;
    int B;
    int C;
    cin >> A >> B >> C;
 
    if (A >= B && B >= C || C >= B && B >= A)
    {
        cout << B;
    }
    else if (B >= A && A >= C || C >= A && A >= B)
    {
        cout << A;
    }
    else
    {
        cout << C;
    }
    cout << endl;
    return;
}

#include <iostream>
using namespace std;

void BAEKJOON_2884()
{
    int H;
    int M;
 
    cin >> H >> M;
    if (H == 0 && M < 45)
    {
        H = 23;
        M += 15;
    }
    else if (M < 45)
    {
        H--;
        M += 15;
    }
    else
    {
        M -= 45;
    }
    cout << H << " " << M;
 
    return;
}

#include <iostream>
using namespace std;

void BAEKJOON_2753()
{
    int inputYear;
    cin >> inputYear;
 
    int result = 0;
    if (inputYear % 400 == 0)
    {
        result = 1;
    }
    else if (inputYear % 100 == 0)
    {
        result = 0;
    }
    else if (inputYear % 4 == 0)
    {
        result = 1;
    }
    else
    {
        result = 0;
    }
    cout << result;
 
    return;
}

#include <iostream>
using namespace std;

void BAEKJOON_9498()
{
    char point;
 
    cin >> point;
    if (point >= 90)
    {
        cout << "A";
    }
    else if (point >= 80)
    {
        cout << "B";
    }
    else if (point >= 70)
    {
        cout << "C";
    }
    else if (point >= 60)
    {
        cout << "D";
    }
    else
    {
        cout << "F";
    }
    cout << endl;
 
    return;
}

#include <iostream>
using namespace std;

void BAEKJOON_1330()
{
    int A;
    int B;
    cin >> A >> B;
    if (A > B)
    {
        cout << ">";
    }
    else if (A < B)
    {
        cout << "<";
    }
    else
    {
        cout << "==";
    }
 
    return;
}