BOJ: 8370 Plane

문제

Byteland Airlines recently extended their aircraft fleet with a new model of a plane. The new acquistion has \(n_{1}\) rowos of seats in the business class and \(n_{2}\) rows in the economic class. In the business class each row contains \(k_{1}\) seats, while each row in the economic class has \(k_{2}\) seats.

Write a program which:

• reads information about available seats in the plane,
• calculates the sum of all seats available in that plane,
• writes the result.

입력

In the first and only line of the standard input there are four integers \(n_{1}, k_{1}, n_{2}\) and \(k_{2} (1 \leq n_{1}, k_{1}, n_{2}, k_{2} \leq 1000)\), separated by single spaces.

출력

The first and only line of the standard output should contain one integer - the total number of seats available in the plane.

예제 입력 1

2 5 3 20

예제 출력 1

70

코드

#include <bits/stdc++.h>

using namespace std;

int main(void) {
    int n1, k1, n2, k2;
    
    cin>>n1>>k1>>n2>>k2;
    
    cout<<(n1*k1)+(n2*k2);
    
    return 0;
}

Reference

BOJ