#include<stdio.h>

int turn90(int arr[11][11]);
int turn180(int arr[11][11]);
int turn270(int arr[11][11]);
int mirror(int arr[11][11]);
int together1(int arr[11][11]);
int together2(int arr[11][11]);
int together3(int arr[11][11]);
int nothing(int arr[11][11]);
int n;
int begin[11][11];
int goal[11][11];
int become[11][11];
int main(){
   scanf("%d",&n);
   char nohelp;
   scanf("%c",&nohelp);
   int i,j;
   for(i=1;i<=n;i++){
       for(j=1;j<=n;j++){
           char sign;
           scanf("%c",&sign);
           if(sign=='\n') j--;
           if(sign=='@') begin[i][j]=0;
           if(sign=='-') begin[i][j]=1;
       }
   }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            char sign;
            scanf("%c",&sign);
            if(sign=='\n') j--;
            if(sign=='@') goal[i][j]=0;
            if(sign=='-') goal[i][j]=1;
        }
    }
    if(turn90(begin)==1){
        printf("1");
        return 0;
    }
    if(turn180(begin)==1){
        printf("2");
        return 0;
    }
    if(turn270(begin)==1){
        printf("3");
        return 0;
    }
    if(mirror(begin)==1){
        printf("4");
        return 0;
    }
    if(together1(begin)==1){
        printf("5");
        return 0;
    }
    if(together2(begin)==1){
        printf("5");
        return 0;
    }
    if(together3(begin)==1){
        printf("5");
        return 0;
    }
    if(nothing(begin)==1){
        printf("6");
        return 0;
    }
    printf("7");
    return 0;
}

int turn90(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            become[j][n+1-i]=arr[i][j];
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(become[i][j]!=goal[i][j]) return 0;
        }
    }
    return 1;
}

int turn180(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            become[n+1-i][n+1-j]=arr[i][j];
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(become[i][j]!=goal[i][j]) return 0;
        }
    }
    return 1;
}

int turn270(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            become[n+1-i][n+1-j]=arr[i][j];
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(become[n+1-j][i]!=goal[i][j]) return 0;
        }
    }
    return 1;
}

int mirror(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            become[i][n+1-j]=arr[i][j];
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(become[i][j]!=goal[i][j]) return 0;
        }
    }
    return 1;
}

int together1(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            become[j][i]=arr[i][j];
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(become[i][j]!=goal[i][j]) return 0;
        }
    }
    return 1;
}

int together2(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            become[n+1-i][j]=arr[i][j];
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(become[i][j]!=goal[i][j]) return 0;
        }
    }
    return 1;
}

int together3(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            become[n+1-j][n+1-i]=arr[i][j];
        }
    }
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(become[i][j]!=goal[i][j]) return 0;
        }
    }
    return 1;
}

int nothing(int arr[11][11]){
    int i,j;
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            if(arr[i][j]!=goal[i][j]) return 0;
        }
    }
    return 1;
}