题解 | 单组_二维数组
单组_二维数组
https://www.nowcoder.com/practice/4df606b6c3764d9c969f8759c8a4807b
import java.util.Scanner;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
long sum = 0;
int n = in.nextInt();
int m = in.nextInt();
for(int i = 0;i<m*n;i++){
int a = in.nextInt();
sum += a;
}
System.out.print(sum);
}
}
