//
//  main.m
//  MagicSquare
//
//  Created by Kosta Sush on 2016-07-27.
//  Copyright © 2016 Kosta Sush. All rights reserved.
//

#import <Foundation/Foundation.h>


/**
 8 1 6
 3 5 7
 4 9 2
 
 
 */

@interface Matrix : NSObject

@property (nonatomic, strong) NSMutableArray <NSArray *> *rows;

- (instancetype)initWithRows:(NSArray <NSArray *> *)rows;
- (void)addRowFromString:(NSString *)row;

- (NSInteger)difsCompareTo:(Matrix *)other;

+ (NSArray <NSMutableArray *>*)magicMatrix;

@end

@implementation Matrix

- (instancetype)initWithRows:(NSMutableArray <NSArray *> *)rows {
    if (self = [super init]) {
        self.rows = rows;
    }
    return self;
}

- (void)addRowFromString:(NSString *)row {
    if (!row.length)
        return;
    
    if (!self.rows) {
        self.rows = [NSMutableArray arrayWithCapacity:3];
    }
    
    NSArray *rowArray = [row componentsSeparatedByString:@" "];
    [self.rows addObject:rowArray];
}

- (NSInteger)difsCompareTo:(Matrix *)other {
    NSInteger cnt = 0;
    for (int i = 0; i < self.rows.count; i++) {
        for (int j = 0; j < self.rows[i].count; j++) {
            NSInteger cost = [self.rows[i][j] integerValue] - [other.rows[i][j] integerValue];
            cnt += labs(cost);
        }
    }
    return cnt;
}

+ (NSArray <Matrix *>*)magicMatrix {
    Matrix *mtx1 = [Matrix new];
    [mtx1 addRowFromString:@"8 1 6"];
    [mtx1 addRowFromString:@"3 5 7"];
    [mtx1 addRowFromString:@"4 9 2"];
    
    Matrix *mtx2 = [Matrix new];
    [mtx2 addRowFromString:@"4 3 8"];
    [mtx2 addRowFromString:@"9 5 1"];
    [mtx2 addRowFromString:@"2 7 6"];
    
    Matrix *mtx3 = [Matrix new];
    [mtx3 addRowFromString:@"2 9 4"];
    [mtx3 addRowFromString:@"7 5 3"];
    [mtx3 addRowFromString:@"6 1 8"];
    
    Matrix *mtx4 = [Matrix new];
    [mtx4 addRowFromString:@"6 7 2"];
    [mtx4 addRowFromString:@"1 5 9"];
    [mtx4 addRowFromString:@"8 3 4"];
    
    Matrix *mtx5 = [Matrix new];
    [mtx5 addRowFromString:@"6 1 8"];
    [mtx5 addRowFromString:@"7 5 3"];
    [mtx5 addRowFromString:@"2 9 4"];
    
    Matrix *mtx6 = [Matrix new];
    [mtx6 addRowFromString:@"8 3 4"];
    [mtx6 addRowFromString:@"1 5 9"];
    [mtx6 addRowFromString:@"6 7 2"];
    
    Matrix *mtx7 = [Matrix new];
    [mtx7 addRowFromString:@"4 9 2"];
    [mtx7 addRowFromString:@"3 5 7"];
    [mtx7 addRowFromString:@"8 1 6"];
    
    Matrix *mtx8 = [Matrix new];
    [mtx8 addRowFromString:@"2 7 6"];
    [mtx8 addRowFromString:@"9 5 1"];
    [mtx8 addRowFromString:@"4 3 8"];
    
    return @[mtx1, mtx2, mtx3, mtx4, mtx5, mtx6, mtx7, mtx8];
}

@end

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        
        char input[100];
        Matrix *inputMtx = [Matrix new];
        
        while(scanf("%[^\n]%*c",input)==1 ) {
            NSString *inputString1 = [NSString stringWithCString:input encoding:NSUTF8StringEncoding];
            [inputMtx addRowFromString:inputString1];
        }
        
        
        
        NSMutableArray *cnts = [NSMutableArray arrayWithCapacity:8];
        for (Matrix *mtx in [Matrix magicMatrix]) {
            NSInteger dif = [inputMtx difsCompareTo:mtx];
            [cnts addObject:@(dif)];
        }
        
        NSArray *sorted = [cnts sortedArrayUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
            return [obj1 integerValue] > [obj2 integerValue];
        }];
        printf("%ld", [sorted.firstObject integerValue]);
        
    }
    return 0;
}