[Line { amount: 2, change: true }, Line { amount: 1, change: false }, Line { amount: 2, change: true }, Line { amount: 2, change: false }, Line { amount: 1, change: true }]
best: Some(13)
curr:  i: 0 l: 2
best: Some(10)
curr:  i: 0 l: 2
best: Some(13)
curr:  i: 0 l: 4
best: Some(13)
curr:  i: 2 l: 4
13