<백준 알고리즘> 8370번: Plane

문제

Byteland Airlines recently extended their aircraft fleet with a new model of a plane. The new acquisition has n(1) rows 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 ≤ n(1), k(1), n(2), k(2) ≤ 1 000), 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

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Solution

#include<stdio.h>

int main(void)
{
	int n1, n2, k1, k2;

	scanf("%d %d %d %d", &n1, &k1, &n2, &k2);

	printf("%d\n", n1*k1+n2*k2);
	return 0;
}