Java题解
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int N = sc.nextInt();
int M = sc.nextInt();
int sum = 1;
for (int i = 0; i < N; i++) {
for (int j = 0; j < M; j++) {
if (M - 1==j){
System.out.print("PUM");
}else {
System.out.print(sum+"\t");
}
sum++;
}
System.out.println();
}
}
}