Is there any online judge for all old ICPC problems (both regional and world finals)? If yes ,please can you leave the link of it as a comment? Thanks in advance!
I was solving a question in vjudge and when I clicked on submit button, I saw a option called : "Submit by". I wanted to change that option. It askes me my codeforces account's "value" but what is "value"??? Can you help me? Thanks in advance!