1.1 maekawa 1: M: 2: {3 15 : 3: 4 0 0 3 2 1 0 0 0 1 2 3 1 1 2 4: 0 4 0 1 2 3 3 2 1 0 0 0 1 2 1 5: 0 0 4 0 0 0 1 2 3 3 2 1 2 1 1 6: }