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    int main()
    {
        int matrix[6][6];
        for(int i = 0;i < 6;i++) {
            for(int j = 0;j < 6;j++) {
                 scanf("%d",&matrix[i][j]);
            }
        }
        int maxsum = -1000,jj = 0;
        for(int i = 0;i < 4;i++) {
            int sum = 0;
            for(int j = jj;j < jj+3;j++) {
                sum += matrix[i][j];
                if(j==jj) sum += matrix[i+1][jj+1];
                sum += matrix[i+2][j];
            }
            jj = (jj < 3) ? jj+1 : 0;
            if(sum > maxsum) maxsum = sum;
            if(jj != 0) i--;
        }
        printf("%d",maxsum);
        return 0;
    }