>>502 の実行結果

~ $ cat 18_454_ex1.txt
5
5 4
2 3
3 2
3 4
4 4
~ $ cat 18_454_ex1.txt | go run 18_454_N_vztr_DP.go
4
~ $ cat 18_454_ex2.txt
11
3 2
2 3
3 4
4 4
5 4
4 7
5 7
6 7
7 7
8 7
7 10
~ $ cat 18_454_ex2.txt | go run 18_454_N_vztr_DP.go
5