10 19 graph
"u0" 50 50
"u1" 50 150
"u2" 50 250
"u3" 150 50
"u4" 150 150
"u5" 150 250
"u6" 250 50
"u7" 250 150
"u8" 250 250
"u9" 350 150
"" u0 u1 4
"" u0 u3 8
"" u0 u4 11
"" u1 u2 17
"" u1 u4 14
"" u2 u4 13
"" u2 u5 3
"" u3 u4 13
"" u3 u6 7
"" u3 u7 9
"" u4 u5 5
"" u4 u7 10
"" u5 u7 6
"" u5 u8 12
"" u6 u7 12
"" u6 u9 11
"" u7 u8 2
"" u7 u9 9
"" u8 u9 10