KEP Contest

I invite everyone to the contest, which will take place on May 5, 2024 at 14:35UTC. Interesting problems await you in the contest.

Contest info:

• Number of problems: 10-12

• Difficulty of problems: < 2400

• Duration: 4 hours

• Contest type: ACM20M

• Languages: C++, Python, C, Kotlin, Haskell, R, Nodejs, PHP, C#, Java, Rust.

Prizes:

• First place – 30$ (TON Wallet)

• Second place – 20$

• Third place – 10$

Link to the platform: https://kep.uz/competitions/contests/

P.S. Registration on the platform only via Gmail/Github.

UPD

Thank you for participating.

It turns out that not all solutions for C were rechecked. After rechecking, ImuriAtsuki moved up to second place.

Results:

1. physics (physics0523) — 12
2. ImuriAtsuki (Savior-of-Cross) — 12
3. shogo314 (shogo314) — 12
4. hocln(hocln) — 12
5. racsosabe (racsosabe) — 12
6. mardonbekhazratov (MardonbekHazratov) — 11
7. alexwice(alexwice) — 10

#include "bits/stdc++.h"
using namespace std;

int main() {
    string s;
    getline(cin, s);

    size_t pos;
    string s1, s2, s3, s4;
    s1 += char(40);
    s1 += char(41);

    s2 += char(123);
    s2 += char(125);

    s3 += char(60);
    s3 += char(62);

    s4 += char(91);
    s4 += char(93);

    for (int i = 0; i != 4000; ++i)
        if ((pos = s.find(s1)) != string::npos) 
            s.erase(pos, 2);
        else if ((pos = s.find(s2)) != string::npos) 
            s.erase(pos, 2);
        else if ((pos = s.find(s3)) != string::npos) 
            s.erase(pos, 2);
        else if ((pos = s.find(s4)) != string::npos) 
            s.erase(pos, 2);

    if (s.empty()) 
        puts("Yes");
    else 
        puts("No");
}