+ N | | + | 1200 | | 661 | 400 | 1284 | 100 | + | 858 4500 | | 1900 | | 100 300 | 15 | + | 1 + 8 + N | | 20 | 100 80 | 12 20 | 295 | | 1000 | 2000 100 | 2000 | | 1 | 10 | 2000 | |