Codeforces Round 451 (Div. 2)

2 problems from Codeforces Round 451 (Div. 2) (contest 898), difficulty 800-2300. 2/2 solutions verified against sample I/O.

2 items

Codeforces Round 451 (Div. 2)

Div. 2 | 2 problems | 2/2 verified | Difficulty 800-2300 | 4m 3s

#	Problem	Rating	Tags	Accepted	Time	✓
A	Rounding	800	implementation, math	17,579	1m 3s	✓
F	Restoring the Expression	2300	brute-force, hashing, math	1,457	3m	✓

Practice › Codeforces Solutions › Codeforces Round 451 (Div. 2) ›

CF 898F - Restoring the Expression

We are given a single long string consisting only of digits. This string is known to come from a correct arithmetic identity of the form a + b = c, but the symbols + and = were removed and the digits were concatenated.

Practice › Codeforces Solutions › Codeforces Round 451 (Div. 2) ›

CF 898A - Rounding

We are given a single non-negative integer, and we are asked to transform it into a nearby number whose last digit is zero.