Hi, I am getting the Probably, the solution is executed with error 'uninitiaized value usage' error even though I have initialized it with 0 (see, a[0][1]=0 ). I ran the program for the test case 4 on online compilers and I'm getting the expected correct output. I tried it on my system as well and it works fine. I don't understand why am I getting the error. Help me know what I am doing wrong?

Also, this is my first blog post. So I am sorry if I miss something or don't meet the rules.

Link to the solution: https://codeforces.me/contest/242/submission/76415727