minL=10x11+16x12+3x13+8x14+15x15+3x21+14x22+12x23+9x24+x25+2x31+20x32+4x33+11x34+5x35+7x41+17x42+13x43+8x44+15x45
x11+x12+x13+x14+x15=14
x21+x22+x23+x24+x25=25
x31+x32+x33+x34+x35=56
x41+x42+x43+x44+x45=45
x11+x21+x31+x41=40
x12+x22+x32+x42=40
x13+x23+x33+x43=20
x14+x24+x34+x44=10
x15+x25+x35+x45=30