코드포스 50A (codeforces 50A)
Algorithms / 코드포스 (codeforces)
Codeforces Codeforces 50a 코드포스 코드포스 50a Problem - 50a - codeforces
코드포스 50A (codeforces 50A) 문제 풀이 및 코드 (description and code)
Problem - 50A - Codeforces
코드
import java.io.*;
public class CF50A {
static int n, m, ans = 0;
static String[] ins;
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
ins = br.readLine().split(" ");
n = Integer.parseInt(ins[0]);m = Integer.parseInt(ins[1]);
ans = (n % 2 == 0) ? (n >> 1) * m : ((n - 1) >> 1) * m + (m >> 1);
bw.write(ans + "\n");bw.flush();bw.close();
}
}