uva題單若打不開請到這裡搜尋題號
http://web.kshs.kh.edu.tw/academy/luckycat/index.htm
或是根據題號前往uvaOJ
http://web.kshs.kh.edu.tw/academy/luckycat/homework/q100.htm
http://web.kshs.kh.edu.tw/academy/luckycat/homework/q12289.htm
https://open.kattis.com/problems/bubbletea
https://open.kattis.com/problems/glitchbot
hint Floyd Warshall algorithm
https://leetcode.com/problems/design-graph-with-shortest-path-calculator
https://neoj.sprout.tw/problem/36/
https://zerojudge.tw/ShowProblem?problemid=c123
http://domen111.github.io/UVa-Easy-Viewer/?133
http://domen111.github.io/UVa-Easy-Viewer/?162
http://web.kshs.kh.edu.tw/academy/luckycat/homework/q402.htm
http://domen111.github.io/UVa-Easy-Viewer/?11111
http://domen111.github.io/UVa-Easy-Viewer/?156
http://domen111.github.io/UVa-Easy-Viewer/?468
http://domen111.github.io/UVa-Easy-Viewer/?755
http://domen111.github.io/UVa-Easy-Viewer/?10041
http://domen111.github.io/UVa-Easy-Viewer/?10057
http://domen111.github.io/UVa-Easy-Viewer/?11062
https://open.kattis.com/problems/electricaloutlets
https://open.kattis.com/problems/kitten
http://domen111.github.io/UVa-Easy-Viewer/?112
http://domen111.github.io/UVa-Easy-Viewer/?115
https://zerojudge.tw/ShowProblem?problemid=c463
http://domen111.github.io/UVa-Easy-Viewer/?10954
https://atcoder.jp/contests/abc214/tasks/abc214_c
https://atcoder.jp/contests/abc212/tasks/abc212_d