Codeforces Contest Round 1025 (Div.2) | All Questions Solutions – FREE! | 17 May 2025

Codeforces Contest Round 1025 (Div.2) | All Questions Solution – FREE! | 17 May 2025 

 

 

Are you ready for today's  Codeforces Contest Round 1025 (Div.2) |? The contest is scheduled for May 17, 2025, at 8:05 PM IST ⏰.

🗓️ Contest Date: May 17, 2025 
⏰ Time: 20:05 IST | 🕒 Duration: 2 Hours 15 Minutes
🕐 Duration: 2 Hours
🎯 Target Participants: Division 2 (Div. 2)

👇Scroll down to get all solutions!👇

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📚 What’s Covered in This Video?
✅ Problem-wise explanation
✅ Intuition & logic behind each question
✅ Step-by-step Python/C++ code (as preferred)
✅ Edge cases and optimization tips

🎯 Whether you're a beginner or intermediate competitive programmer, this video will help you understand every approach clearly.
👍 Don’t forget to like, comment, and subscribe for more problem-solving videos!

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🚀 Don’t miss this opportunity to learn, compete, and grow as a coder! Let’s crack Starters 181 together! 🔥💻

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👇Scroll down to get all solutions!👇

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NOTE :- Don’t copy the full code — use the logic.
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Q1 Solutions -

t = int(input())

for _ in range(t):

    n = int(input())

    vec = list(map(int, input().split()))               # Q1 Solution 

    total = sum(vec)

    if total == n:

        print("YES")

        continue

    found = False

    for i in range(n - 1):

        if vec[i] == 0 and vec[i + 1] == 0:              #Q1 Solution

            print("YES")

            found = True

            break

    if not found:

        print("NO")

Q2 Solutions -

1. import sys
2.  
3. def main():
4. input = sys.stdin.read
5. data = input().split()
6. t = int(data[0])
7. idx = 1
8. for _ in range(t):
9. n = int(data[idx])
10. m = int(data[idx+1])
11. a = int(data[idx+2])
12. b = int(data[idx+3])
13. idx += 4
15. h1 = min(a, n - a + 1)
16. w1 = min(b, m - b + 1)
19. option1 = (h1 - 1).bit_length() + (m - 1).bit_length()
20. option2 = (n - 1).bit_length() + (w1 - 1).bit_length()
22. ans = 1 + min(option1, option2)
23. print(ans)
24.  
25. if __name__ == "__main__":
26. main()

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Q3 Solutions -

def solve():

    m = int(input())

    print("mul 9", flush=True)

    r = input()

    if r == "-1":

        return

    print("digit", flush=True)

    r = input()

    if r == "-1":

        return

    print("digit", flush=True)

    r = input()

    if r == "-1":

        return

    print(f"add {m - 9}", flush=True)

    r = input()

    if r == "-1":

        return

    print("!", flush=True)

    r = input()

    if r == "-1":

        return

t = int(input())

for _ in range(t):

    solve()

Q4 Solutions - 

def solve():

    n = int(input())

    

    print("mul 9", flush=True)

    resp = input()

    if resp == "-1":

        return

    print("digit", flush=True)

    resp = input()

    if resp == "-1":

        return

    print("digit", flush=True)

    resp = input()

    if resp == "-1":

        return

    print(f"add {n - 9}", flush=True)

    resp = input()

    if resp == "-1":

        return

    print("!", flush=True)

    resp = input()

    if resp == "-1":

        return

t = int(input())

for _ in range(t):

    solve()

 

Q5 Solutions - ( Don’t copy the full code — use the logic.We're not responsible for plagiarism issues.Thank you! )

def solve():

    import sys

    n = int(sys.stdin.readline())

    

    def send(cmd):

        print(cmd, flush=True)

        response = sys.stdin.readline().strip()

        if response == "-1":

            return False

        return True

    

    if n == 9:

        if not send("mul 9"):

            return

        if not send("digit"):

            return

        if not send("digit"):

            return

        print("!")

        sys.stdin.readline()

        return

    else:

        if not send("mul 9"):

            return

        if not send("digit"):

            return

        if not send("digit"):

            return

        add_cmd = f"add {n - 9}"

        if not send(add_cmd):

            return

        print("!")

        sys.stdin.readline()

        return

t = int(sys.stdin.readline())

for _ in range(t):

    solve()