$ g++ a37.cpp;  a.exe
srand=1143194806
2,1,3,30.238300,31.128300
saving
2,1,4,31.067400,31.724100
saving
2,1,5,31.367600,31.818400
saving
2,1,6,31.469200,31.905700
saving
2,1,7,31.425200,31.856600
2,1,8,31.411000,31.838800
2,1,9,30.945700,31.486600
2,1,10,30.888000,31.441400
2,1,11,31.417500,31.863700
2,1,12,31.468500,31.905200
2,1,13,31.487500,31.900200
saving
2,1,14,31.411300,31.880700
2,1,15,31.026100,31.654800
2,1,16,30.202500,31.136200
2,1,17,28.149700,28.874300
2,2,3,30.191800,31.124400
2,2,4,31.055600,31.620500
2,2,5,31.811100,32.276400
saving
2,2,6,31.954700,32.388700
saving
2,2,7,32.133300,32.531200
saving
2,2,8,32.063700,32.470400
2,2,9,31.928800,32.350500
2,2,10,31.859900,32.267400
2,2,11,31.908800,32.304200
2,2,12,32.130200,32.517800
2,2,13,32.039000,32.422700
2,2,14,32.043200,32.469100
2,2,15,31.749200,32.214400
2,2,16,31.082200,31.645300
2,2,17,30.224400,31.196200
2,3,4,31.039000,31.709800
2,3,5,31.774900,32.234300
2,3,6,31.696500,32.080300
2,3,7,32.114200,32.497400
2,3,8,32.221400,32.588000
saving
2,3,9,31.995300,32.375900
2,3,10,32.229500,32.632400
saving
2,3,11,32.159000,32.545500
2,3,12,32.002800,32.384900
2,3,13,32.277200,32.657100
saving
2,3,14,32.146000,32.523600
2,3,15,31.695500,32.082300
2,3,16,31.746400,32.185500
2,3,17,31.060400,31.686700
2,4,5,31.393700,31.840300
2,4,6,31.954900,32.365300
2,4,7,32.194800,32.580700
2,4,8,32.058500,32.426600
2,4,9,32.066300,32.489400
2,4,10,32.324800,32.732500
saving
2,4,11,31.975700,32.324900
2,4,12,32.308700,32.691600
2,4,13,32.046100,32.462800
2,4,14,32.053300,32.462300
2,4,15,32.125100,32.514200
2,4,16,31.980600,32.394800
2,4,17,31.413100,31.897300
2,5,6,31.540600,32.002100
2,5,7,32.112200,32.492700
2,5,8,32.220800,32.600400
2,5,9,32.137200,32.562700
2,5,10,31.983600,32.342700
2,5,11,32.211000,32.640900
2,5,12,32.181600,32.587400
2,5,13,32.035300,32.388800
2,5,14,32.096500,32.497300
2,5,15,32.238800,32.629800
2,5,16,32.126900,32.514800
2,5,17,31.429000,31.880000
2,6,7,31.500700,31.942700
2,6,8,32.072400,32.471100
2,6,9,31.990800,32.393500
2,6,10,32.345500,32.735900
saving
2,6,11,32.204800,32.604500
2,6,12,30.395500,30.666100
2,6,13,32.189600,32.613300
2,6,14,32.311600,32.697300
2,6,15,31.952000,32.343700
2,6,16,32.098500,32.483900
2,6,17,31.458800,31.899900
2,7,8,31.397900,31.824700
2,7,9,31.836000,32.243000
2,7,10,32.211200,32.595700
2,7,11,32.116900,32.461200
2,7,12,32.237600,32.643900
2,7,13,32.141700,32.569500
2,7,14,32.112900,32.476000
2,7,15,32.267100,32.660200
2,7,16,31.838800,32.235000
2,7,17,31.443200,31.870500
2,8,9,30.945000,31.509700
2,8,10,31.812100,32.202000
2,8,11,32.260100,32.655900
2,8,12,32.295400,32.689800
2,8,13,31.995200,32.345300
2,8,14,32.233300,32.626000
2,8,15,32.223100,32.635900
2,8,16,31.824300,32.231600
2,8,17,30.952000,31.497400
2,9,10,30.891100,31.450100
2,9,11,31.843800,32.282100
2,9,12,31.989500,32.377900
2,9,13,32.101300,32.504200
2,9,14,32.081000,32.502400
2,9,15,31.952200,32.379600
2,9,16,31.876700,32.296400
2,9,17,30.945900,31.485100
2,10,11,31.447600,31.876200
2,10,12,32.026200,32.425300
2,10,13,32.267000,32.653800
2,10,14,31.994400,32.393600
2,10,15,32.181500,32.556000
2,10,16,32.124000,32.515200
2,10,17,31.482600,31.912900
2,11,12,31.535500,31.945900
2,11,13,32.135200,32.510500
2,11,14,32.171400,32.570000
2,11,15,32.165300,32.562900
2,11,16,32.087200,32.452500
2,11,17,31.537400,31.962800
2,12,13,31.446000,31.848800
2,12,14,31.949400,32.364500
2,12,15,31.623500,32.014900
2,12,16,31.977200,32.398000
2,12,17,31.446800,31.884100
2,13,14,31.382900,31.843600
2,13,15,31.811600,32.294200
2,13,16,31.777700,32.236600
2,13,17,31.374200,31.821500
2,14,15,31.027600,31.647300
2,14,16,31.037000,31.632700
2,14,17,31.030600,31.682300
2,15,16,30.180600,31.099600
2,15,17,30.179500,31.082400
2,16,17,28.084600,28.773600
3,1,2,30.206000,31.139100
3,1,4,31.443100,31.887400
3,1,5,31.998900,32.447400
3,1,6,32.158400,32.554200
3,1,7,32.242000,32.633600
3,1,8,32.200100,32.606200
3,1,9,31.946100,32.344600
3,1,10,31.952300,32.358800
3,1,11,32.070100,32.450100
3,1,12,32.155700,32.537900
3,1,13,32.174500,32.553400
3,1,14,32.055400,32.401300
3,1,15,31.715800,32.161900
3,1,16,31.295100,31.847700
3,1,17,30.226800,31.185400
3,2,3,31.343900,31.894000
3,2,4,31.223200,31.755900
3,2,5,31.847200,32.246300
3,2,6,32.066700,32.453600
3,2,7,32.240000,32.624800
3,2,8,32.269000,32.634300
3,2,9,32.065200,32.433400
3,2,10,32.056200,32.446000
3,2,11,32.012100,32.406300
3,2,12,32.239000,32.623700
3,2,13,32.191300,32.573600
3,2,14,32.029000,32.424700
3,2,15,31.826400,32.236200
3,2,16,31.291700,31.838500
3,2,17,30.216700,30.596800
3,3,4,31.665800,32.122100
3,3,5,31.905900,32.271800
3,3,6,31.431100,31.887500
3,3,7,32.258600,32.649900
3,3,8,32.165400,32.552800
3,3,9,32.015000,32.448000
3,3,10,32.300300,32.661500
3,3,11,32.264500,32.666500
3,3,12,31.948500,32.386400
3,3,13,32.271900,32.651500
3,3,14,32.274800,32.652600
3,3,15,31.439300,31.895900
3,3,16,31.839800,32.231700
3,3,17,31.485500,31.955900
3,4,5,31.953600,32.299000
3,4,6,32.094200,32.478300
3,4,7,32.251200,32.631900
3,4,8,32.250200,32.665800
3,4,9,32.382400,32.796900
saving
3,4,10,32.429500,32.841700
saving
3,4,11,32.290700,32.678400
3,4,12,32.423000,32.819500
3,4,13,32.343900,32.733700
3,4,14,32.185500,32.585700
3,4,15,32.222600,32.622100
3,4,16,32.039200,32.398900
3,4,17,31.922000,32.383400
3,5,6,32.202800,32.599300
3,5,7,32.133800,32.505400
3,5,8,32.187300,32.584600
3,5,9,32.347200,32.727900
3,5,10,32.172200,32.568300
3,5,11,32.427400,32.820300
3,5,12,32.434300,32.836800
saving
3,5,13,32.188300,32.586200
3,5,14,32.314000,32.703500
3,5,15,32.202200,32.592100
3,5,16,32.315800,32.715700
3,5,17,32.077700,32.486200
3,6,7,32.167000,32.543500
3,6,8,32.294000,32.687100
3,6,9,32.049200,32.480700
3,6,10,32.439200,32.846900
saving
3,6,11,32.392900,32.813800
3,6,12,30.850000,31.147300
3,6,13,32.484500,32.878800
saving
3,6,14,32.484100,32.888700
3,6,15,31.988000,32.410800
3,6,16,32.235800,32.601600
3,6,17,32.248700,32.639900
3,7,8,32.188300,32.588900
3,7,9,32.125100,32.489000
3,7,10,32.237600,32.615400
3,7,11,32.208000,32.584200
3,7,12,32.444900,32.838700
3,7,13,32.440100,32.851300
3,7,14,32.308500,32.714800
3,7,15,32.331300,32.687400
3,7,16,32.071800,32.430400
3,7,17,32.138000,32.524400
3,8,9,31.992700,32.377500
3,8,10,32.117900,32.503200
3,8,11,32.212600,32.563400
3,8,12,32.426800,32.822500
3,8,13,32.220400,32.600100
3,8,14,32.476600,32.857600
3,8,15,32.234100,32.633300
3,8,16,32.130100,32.511100
3,8,17,31.959800,32.350000
3,9,10,31.946100,32.369800
3,9,11,32.070300,32.436100
3,9,12,31.906600,32.349300
3,9,13,32.307000,32.694800
3,9,14,32.317500,32.719700
3,9,15,31.950400,32.394600
3,9,16,32.138400,32.542300
3,9,17,32.001100,32.411100
3,10,11,32.145800,32.518300
3,10,12,32.268500,32.639100
3,10,13,32.259700,32.655100
3,10,14,32.229700,32.630100
3,10,15,32.233800,32.626300
3,10,16,32.235700,32.630100
3,10,17,32.186500,32.582300
3,11,12,32.181600,32.550600
3,11,13,32.311400,32.705300
3,11,14,32.218000,32.628300
3,11,15,32.240100,32.627700
3,11,16,32.288200,32.676200
3,11,17,32.176900,32.536000
3,12,13,32.129100,32.547000
3,12,14,32.119700,32.501300
3,12,15,31.350100,31.773100
3,12,16,32.082300,32.489800
3,12,17,32.210800,32.618100
3,13,14,31.974400,32.416300
3,13,15,31.876400,32.273100
3,13,16,31.812700,32.214800
3,13,17,32.048100,32.395100
3,14,15,31.449400,31.926700
3,14,16,31.186200,31.710900
3,14,17,31.684100,32.147000
3,15,16,30.271200,30.645700
3,15,17,31.239900,31.782200
3,16,17,30.277400,31.157100