cities.txt

    0 0.587 1.212 0.701 1.936 0.604 0.748 2.139 2.182 0.543
0.587     0 0.920 0.940 1.745 1.188 0.713 1.858 1.737 0.597
1.212 0.920     0 0.879 0.831 1.726 1.631 0.949 1.021 1.494
0.701 0.940 0.879     0 1.374 0.968 1.420 1.645 1.891 1.220
1.936 1.745 0.831 1.374     0 2.339 2.451 0.347 0.959 2.300
0.604 1.188 1.726 0.968 2.339     0 1.092 2.594 2.734 0.923
0.748 0.713 1.631 1.420 2.451 1.092     0 2.571 2.408 0.205
2.139 1.858 0.949 1.645 0.347 2.594 2.571     0 0.678 2.442
2.182 1.737 1.021 1.891 0.959 2.734 2.408 0.678     0 2.329
0.543 0.597 1.494 1.229 2.300 0.923 0.205 2.442 2.329     0