，我太菜了
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();//hang
int m = in.nextInt();//lie
List<List<Integer>> list = new ArrayList<>();
while (in.hasNextInt()) { // 注意 while 处理多个 case
List<Integer> temp = new ArrayList<>();
for (int j = 0; j < m; j++) {
temp.add(in.nextInt());
}
list.add(temp);
}
int res = 0;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (j == m - 1 && list.get(i).get(j) == 0){
res++;
break;
}
if (list.get(i).get(j) == 0){
res++;
j++;
}
}
}
// System.out.println(list.size());
// System.out.println(list.get(0).size());
System.out.println(res);
}
}
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