AC 100的代码
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner scanner=new Scanner(System.in);
while(scanner.hasNext()) {
int N=scanner.nextInt();
int M=scanner.nextInt();
int[][] all=new int[N][M];
for(int i=0;i<N;i++) {
for(int j=0;j<M;j++) {
all[i][j]=scanner.nextInt();
}
}
int top=N*M;
int num=0;
for(int i=0;i<N;i++) {
for(int j=0;j<M;j++) {
if(i>0&&all[i][j]>all[i-1][j]) {
num+=all[i][j]-all[i-1][j];
}
if(j>0&&all[i][j]>all[i][j-1]) {
num+=all[i][j]-all[i][j-1];
}
if(i<N-1&&all[i][j]>all[i+1][j]) {
num+=all[i][j]-all[i+1][j];
}
if(j<M-1&&all[i][j]>all[i][j+1]) {
num+=all[i][j]-all[i][j+1];
}
if(i==0)
num+=all[i][j];
if(j==0)
num+=all[i][j];
if(i==N-1)
num+=all[i][j];
if(j==M-1)
num+=all[i][j];
}
}
int result=top*2+num;
System.out.println(result);
}
}
}