$ g++ a29.cpp; a.exe
srand=1141661722
2,1,3,16.715500
2,1,4,16.881750
2,1,5,16.870950
2,1,6,16.856600
2,1,7,16.728200
2,1,8,15.924950
2,2,3,16.716900
2,2,4,16.879400
2,2,5,16.920400
2,2,6,16.905050
2,2,7,16.855350
2,2,8,16.729350
2,3,4,16.893400
2,3,5,16.933050
2,3,6,16.096250
2,3,7,16.938100
2,3,8,16.881600
2,4,5,16.871400
2,4,6,16.932400
2,4,7,16.930900
2,4,8,16.883300
2,5,6,16.877900
2,5,7,16.898300
2,5,8,16.885600
2,6,7,16.749850
2,6,8,16.715200
2,7,8,15.912350
3,1,2,16.726600
3,1,4,16.919000
3,1,5,16.916150
3,1,6,16.903850
3,1,7,16.960350
3,1,8,16.706350
3,2,3,16.942950
3,2,4,16.887600
3,2,5,16.909500
3,2,6,16.926800
3,2,7,16.876200
3,2,8,16.281050
3,3,4,16.900950
3,3,5,16.901700
3,3,6,15.961600
3,3,7,16.881000
3,3,8,16.930750
3,4,5,16.930150
3,4,6,16.861300
3,4,7,16.921050
3,4,8,16.927650
3,5,6,16.900600
3,5,7,16.867950
3,5,8,16.883700
3,6,7,16.281350
3,6,8,16.936000
3,7,8,16.717150
4,1,2,16.871500
4,1,3,16.942400
4,1,5,16.723450
4,1,6,16.928900
4,1,7,16.865250
4,1,8,16.878000
4,2,3,16.892400
4,2,4,16.917600
4,2,5,16.913100
4,2,6,16.877800
4,2,7,16.927850
4,2,8,16.911350
4,3,4,16.938100
4,3,5,16.900650
4,3,6,15.957850
4,3,7,16.938000
4,3,8,16.287950
4,4,5,16.711200
4,4,6,16.932100
4,4,7,16.881850
4,4,8,16.712350
4,5,6,16.294250
4,5,7,16.916200
4,5,8,16.937850
4,6,7,16.926500
4,6,8,16.895800
4,7,8,16.897250
5,1,2,16.877300
5,1,3,16.915300
5,1,4,16.711950
5,1,6,16.710750
5,1,7,16.914650
5,1,8,16.864400
5,2,3,16.923850
5,2,4,16.870200
5,2,5,16.863350
5,2,6,16.891750
5,2,7,16.881200
5,2,8,16.917950
5,3,4,16.710150
5,3,5,16.889850
5,3,6,16.095750
5,3,7,16.898500
5,3,8,16.735500
5,4,5,15.914650
5,4,6,16.915500
5,4,7,16.885750
5,4,8,15.927000
5,5,6,16.737350
5,5,7,16.846350
5,5,8,16.714900
5,6,7,16.930750
5,6,8,16.935800
5,7,8,16.866150
6,1,2,16.877000
6,1,3,16.888350
6,1,4,16.944600
6,1,5,16.708150
6,1,7,16.958300
6,1,8,16.888650
6,2,3,16.916150
6,2,4,16.927000
6,2,5,16.908200
6,2,6,16.904100
6,2,7,16.921800
6,2,8,16.917500
6,3,4,16.257400
6,3,5,16.921700
6,3,6,15.952950
6,3,7,16.883750
6,3,8,16.938650
6,4,5,16.731000
6,4,6,16.887400
6,4,7,16.928550
6,4,8,16.700350
6,5,6,16.951050
6,5,7,16.904600
6,5,8,16.267350
6,6,7,16.889450
6,6,8,16.942100
6,7,8,16.904300
7,1,2,16.736300
7,1,3,16.957100
7,1,4,16.882650
7,1,5,16.918550
7,1,6,16.918100
7,1,8,16.713900
7,2,3,16.253400
7,2,4,16.881750
7,2,5,16.920150
7,2,6,16.884300
7,2,7,16.896950
7,2,8,16.943650
7,3,4,16.915800
7,3,5,16.920950
7,3,6,15.936200
7,3,7,16.937850
7,3,8,16.892800
7,4,5,16.925700
7,4,6,16.937700
7,4,7,16.887550
7,4,8,16.888050
7,5,6,16.911350
7,5,7,16.877800
7,5,8,16.920450
7,6,7,16.945050
7,6,8,16.284600
7,7,8,16.737500
8,1,2,15.902500
8,1,3,16.710150
8,1,4,16.892950
8,1,5,16.884350
8,1,6,16.883700
8,1,7,16.716400
8,2,3,16.708300
8,2,4,16.867900
8,2,5,16.900000
8,2,6,16.930750
8,2,7,16.863200
8,2,8,16.714950
8,3,4,16.909950
8,3,5,16.922200
8,3,6,16.124350
8,3,7,16.915200
8,3,8,16.879200
8,4,5,16.851550
8,4,6,16.935300
8,4,7,16.922900
8,4,8,16.885750
8,5,6,16.890450
8,5,7,16.848550
8,5,8,16.880950
8,6,7,16.735700
8,6,8,16.711550
8,7,8,15.931100