http://poj.org/problem?id=2082

https://vjudge.net/problem/POJ-2082

問題文の読解がまず難しい

http://poj.org/problem?id=2068 https://onlinejudge.u-aizu.ac.jp/challenges/search/titles/1230 https://www.acmicpc.net/problem/9157

https://vjudge.net/problem/POJ-2068 https://vjudge.net/problem/Aizu-1230 https://vjudge.net/problem/Baekjoon-9157

http://poj.org/problem?id=2046 https://www.acmicpc.net/problem/3937

https://vjudge.net/problem/POJ-2046 https://vjudge.net/problem/Baekjoon-3937

http://poj.org/problem?id=2032 https://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1128 https://www.acmicpc.net/problem/22814

https://vjudge.net/problem/POJ-2032 https://vjudge.net/problem/Aizu-1128 https://vjudge.net/problem/Baekjoon-22814

http://poj.org/problem?id=1986 http://bailian.openjudge.cn/practice/1986?lang=en_US

https://vjudge.net/problem/POJ-1986 https://vjudge.net/problem/OpenJ_Bailian-1986

POJだとMLがきついのでOpenJ_BailianでAC。

http://poj.org/problem?id=1854 https://www.acmicpc.net/problem/4309 https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=1657

https://vjudge.net/problem/POJ-1854 https://vjudge.net/problem/Baekjoon-4309 https://vjudge.net/problem/UVA-10716

http://poj.org/problem?id=1740

https://vjudge.net/problem/POJ-1740

http://poj.org/problem?id=1509 https://www.acmicpc.net/problem/3492 https://basecamp.eolymp.com/en/problems/2912 https://www.spoj.com/problems/BEADS/en/

https://vjudge.net/problem/POJ-1509 https://vjudge.net/problem/Baekjoon-3492 https://vjudge.net/problem/EOlymp-2912 https://vjudge.net/problem/SPOJ-BEADS

http://poj.org/problem?id=1286 https://www.acmicpc.net/problem/9817 https://basecamp.eolymp.com/en/problems/2227

https://vjudge.net/problem/POJ-1286 https://vjudge.net/problem/Baekjoon-9817 https://vjudge.net/problem/EOlymp-2227

http://poj.org/problem?id=1284

https://vjudge.net/problem/POJ-1284