20211115 
The special session of Problem B is
updated. 
20211108 
The testcase of Problem B is
updated. 
20211027 
Winner announced. 
20211018 
The Top X Teams
of each problem are announced. 
20211013 
The hidden cases of Problem B is
updated. 
20210922 
The hidden cases of Problem A is
updated. 
20210903 
The testcase of Problem A is
updated. 
20210902 
The Q&A of Problem B is
updated. 
20210901 
Beta test result announcement of Problem
A(Updated) 
20210831 
The Q&A of Problem B is
updated. 
20210830 
The Q&A of Problem A is
updated. 
20210826 
The Q&A of Problem C is
updated. 
20210824 
Beta test result announcement of Problem
C(Updated) 
20210813 
Beta test result announcement of Problem C 
20210812 
The Q&A of Problem B is
updated. 
20210812 
Beta test result announcement of Problem
B 
20210811 
Beta test result announcement of Problem A 
20210811 
The Q&A of Problem A is
updated. 
20210809 
The Q&A of Problem B is
updated. 
20210729 
The Q&A of Problem B is
updated. 
20210728 
The Q&A of Problem A is
updated. 
20210727 
The Q&A of Problem B is
updated. 
20210723 
Alpha test result announcement of Problem C 
20210722 
The Q&A of Problem B is
updated. 
20210721 
Problem C is
updated. 
20210721 
The Q&A of Problem C is
updated. 
20210720 
The Q&A of Problem B is
updated. 
20210716 
The Q&A of Problem A is
updated. 
20210714 
The testcase of Problem A is
updated. 
20210714 
The testcase of Problem B is
updated. 
20210713 
The Q&A of Problem C is
updated. 
20210709 
The Q&A of Problem A is
updated. 
20210709 
Problem C is
updated. 
20210709 
The testcase of Problem B is
updated. 
20210705 
The testcase of Problem B is
updated. 
20210705 
Alpha test result announcement of Problem
B 
20210628 
Alpha test result announcement of Problem A 
20210624 
The Q&A of Problem C is
updated. 
20210623 
The Q&A of Problem A is
updated. 
20210622 
The Q&A of Problem B is
updated. 
20210621 
Alpha test submission deadline of
problem C is extended
to June 30,
2021 
20210618 
The evaluator of Problem B is
updated. 
20210618 
The Q&A of Problem B is
updated. 
20210616 
The Q&A of Problem B is
updated. 
20210611 
Problem C is
updated. 
20210611 
The Q&A of Problem C is
updated. 
20210609 
Alpha test submission deadline of
problem C is extended
to June 22,
2021 
20210609 
Alpha test submission deadline of
problem B is extended
to June 22,
2021 
20210608 
The testcase of Problem B is
updated. 
20210608 
The Q&A of Problem B is
updated. 
20210608 
The Q&A of Problem A is
updated. 
20210607 
The Q&A of Problem C is
updated. 
20210604 
The Q&A of Problem A is
updated. 
20210603 
The Q&A of Problem C is
updated. 
20210602 
The Q&A of Problem C is
updated. 
20210601 
The testcase of Problem A is
updated. 
20210524 
The Q&A of Problem B is
updated. 
20210519 
The Q&A of Problem A is
updated. 
20210519 
Beta test submission deadline is extended
to July 30,
2021 
20210519 
Alpha test submission deadline is extended
to June 11,
2021 
20210518 
Final
submission deadline is extended to September 6,
2021 
20210518 
Beta test submission deadline is extended
to July 31,
2021 
20210518 
Alpha test submission deadline is extended
to June 12,
2021 
20210512 
Problem C is
updated. 
20210512 
The Q&A of Problem C is
updated. 
20210510 
Registration deadline is extended to May
17, 2021 (17:00, GMT+8) 
20210506 
The Q&A of Problem C is
updated. 
20210504 
The Q&A of Problem A is
updated. 
20210504 
The Q&A of Problem C is
updated. 
20210429 
The testcase of Problem C is
updated. 
20210401 
The testcase of Problem A is
updated. 
20210401 
The testcase of
Problem B is updated. 
20210325 
The registration system has
been fixed. If you have registered before,
please confirm the information is correct.
You can email to us if you have any problem. 
20210324 
The registration system is
under maintenance, and it will be available
soon 
20210315 
The registration system is
available, and it will
close at 5/10 
20210220

ICCAD2021 CAD Contest will
formally start on Feb. 20.
Contest problems are announced.
