#include<stdio.h>
int main(){
    int r,c;
    scanf("%d %d",&r,&c);
    int a[r][c];
    for (int i=0;i<r;i++){
        for (int j=0;j<c;j++){
            scanf("%d",a[r][c]);
        }
    }
    for (int i=r;i<=1;i--){
        for (int j=c;j<=1;j--){
            printf("%d"a[i][j]);
        }
    }
}