it's fine, sometimes stupid mistake happens, you can't really prevent it, so don't blame yourself for it!

probably why i have 8 sumissions on C lol

No stupid person gets to expert, 1752 even. Making stupid mistakes is ok, it doesn't make you stupid

“If you realize that you were stupid — you are getting smarter”

It's normal to make mistakes. It's just an opportunity for you to learn something new.

Thank you all! I know I behave like a giant baby. Now I calm down and I hope the hash method may be beneficial for you!

Yes you indeed are stupid, I can see it through your username. CR7 GOATED

Score some penalties in Al-Nassr you'll feel better

ok sure, i am going to comfort you. No one is holding you at gunpoint asking to solve in the given time limit otherwise you are going to lose your life. This is a nice thing to know.

Real life gives you lots of time, so if you put in enough time maybe you are going to crack P vs NP instead of these kiddish problems that have been solved thousands of times by millions of people every year.

Become like Einstein who gave up decades for a single problem. Take it sloow.

I didn't participate in this contest, but D is much easier than you think

It's totally normal to make mistakes. I have came up with the solution to problems just after the contest so many times. For example in the recent 842 div.2 contest, I solved E just after the contest. I know it's very frustrating. But you should keep participating in contests and solving problems, and eventually you will improve.

But have you considered that I solved ABCDE within 20 minutes for the first time, but the disabled chose Unrated :(

Got -14 at D, and still figuring out why it was failing, at last, got AC, 7 mins before the end

I want to know why my solution was failing My approach was to find all the primes until 3e6 (by sieve) and then divide it if it's divisible by n.

    int n; cin>>n;
    set<int> pr(primes.begin(),primes.end());
    // dbg(pr)
    fi(primes.size()) {
        int z=primes[i]; 
        if(z>n) break;
        if(n%z==0) {
            
            int val=n/z;
            val=sqrt(val);
            if(val!=z and pr.find(val)!=pr.end()) {
                cout<<val<<" ";
                cout<<z<<endl; return;
            }
        }
        z*=primes[i];
        if(z>n) continue;
        if(n%z==0 and pr.find(n/z)!=pr.end() and (n/z)!=primes[i]) {
            cout<<primes[i]<<" ";
            cout<<n/z<<endl; return;
        }
    }

Runtime Error (RE) causes a penalty, but compilation error (CE) does not.

When submitting a C++ program as a Python program, why does it cause a RE instead of a CE?