Rating < 1300 (Extra)

Extra problems for beginners, unrated users or users with Codeforces Rating < 1300 (Extra).

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PROBLEMS 200

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PROBLEM SET

All Problems

#	PROBLEM	RATING	DIFFICULTY	TAGS
01	Crazy Computer CF-716/A	800	LVL 1	implementation
02	Haiku CF-78/A	800	LVL 1	implementationstrings
03	LLPS CF-202/A	800	LVL 1	binary searchbitmasksbrute force +3
04	Wizards' Duel CF-591/A	900	LVL 1	implementationmath
05	George and Accommodation CF-467/A	800	LVL 1	implementation
06	Soldier and Bananas CF-546/A	800	LVL 1	brute forceimplementationmath
07	GukiZ and Contest CF-551/A	800	LVL 1	brute forceimplementationsortings
08	Wasted Time CF-127/A	900	LVL 1	geometry
09	Combination Lock CF-540/A	800	LVL 1	implementation
10	Vitaly and Night CF-595/A	800	LVL 1	constructive algorithmsimplementation
11	Shaass and Oskols CF-294/A	800	LVL 1	implementationmath
12	Sereja and Mugs CF-426/A	800	LVL 1	implementation
13	Line to Cashier CF-408/A	900	LVL 1	implementation
14	Mashmokh and Lights CF-415/A	900	LVL 1	implementation
15	Squats CF-424/A	900	LVL 1	implementation
16	Toy Army CF-84/A	900	LVL 1	mathnumber theory
17	Soroban CF-363/A	800	LVL 1	implementation
18	Kyoya and Photobooks CF-554/A	900	LVL 1	brute forcemathstrings
19	Rewards CF-448/A	800	LVL 1	implementation
20	Colorful Stones (Simplified Edition) CF-265/A	800	LVL 1	implementation
21	Buggy Sorting CF-246/A	900	LVL 1	constructive algorithmsgreedysortings
22	Greg's Workout CF-255/A	800	LVL 1	implementation
23	Police Recruits CF-427/A	800	LVL 1	implementation
24	Black Square CF-431/A	800	LVL 1	implementation
25	Circle Line CF-278/A	800	LVL 1	implementation
26	Playing with Dice CF-378/A	800	LVL 1	brute force
27	Roma and Lucky Numbers CF-262/A	800	LVL 1	implementation
28	Games CF-268/A	800	LVL 1	brute force
29	Bear and Finding Criminals CF-680/B	1000	LVL 2	constructive algorithmsimplementation
30	Nicholas and Permutation CF-676/A	800	LVL 2	constructive algorithmsimplementation
31	Uncowed Forces CF-604/A	1000	LVL 2	implementation
32	Choosing Laptop CF-106/B	1000	LVL 2	brute forceimplementation
33	Ternary Logic CF-136/B	1100	LVL 2	implementationmath
34	Lever CF-376/A	900	LVL 2	implementationmath
35	Wet Shark and Odd and Even CF-621/A	900	LVL 2	implementation
36	A and B and Chess CF-519/A	900	LVL 2	implementation
37	Arrays CF-572/A	900	LVL 2	sortings
38	Saitama Destroys Hotel CF-608/A	1000	LVL 2	implementationmath
39	Shell Game CF-35/A	1000	LVL 2	implementation
40	George and Sleep CF-387/A	900	LVL 2	implementation
41	Vanya and Table CF-552/A	1000	LVL 2	implementationmath
42	Drazil and Date CF-515/A	1000	LVL 2	math
43	Sinking Ship CF-63/A	900	LVL 2	implementationsortingsstrings
44	Initial Bet CF-478/A	1100	LVL 2	implementation
45	Tavas and Nafas CF-535/A	1000	LVL 2	brute forceimplementation
46	Calculating Function CF-486/A	800	LVL 2	implementationmath
47	Exams CF-194/A	900	LVL 2	implementationmath
48	Postcards and photos CF-137/A	900	LVL 2	implementation
49	Multiplication Table CF-577/A	1000	LVL 2	implementationnumber theory
50	Palindromic Times CF-108/A	1000	LVL 2	implementationstrings
51	Help Vasilisa the Wise 2 CF-143/A	1000	LVL 2	brute forcemath
52	Currency System in Geraldion CF-560/A	1000	LVL 2	implementationsortings
53	Game Outcome CF-157/A	800	LVL 2	brute force
54	Group of Students CF-357/A	1000	LVL 2	brute forcegreedyimplementation
55	Interview CF-631/A	900	LVL 2	brute forceimplementation
56	Petya and Countryside CF-66/B	1100	LVL 2	brute forceimplementation
57	Case of the Zeros and Ones CF-556/A	900	LVL 2	greedy
58	Worms Evolution CF-31/A	1200	LVL 2	implementation
59	Ciel and Dancing CF-322/A	1000	LVL 2	greedy
60	Table CF-359/A	1000	LVL 2	constructive algorithmsgreedyimplementation
61	Sereja and Coat Rack CF-368/A	1000	LVL 2	implementation
62	Toy Cars CF-545/A	900	LVL 2	implementation
63	Joysticks CF-651/A	1100	LVL 2	dpgreedyimplementation +1
64	Lucky Substring CF-122/B	1000	LVL 2	brute forceimplementation
65	Lucky Ticket CF-146/A	800	LVL 2	implementation
66	Kefa and First Steps CF-580/A	900	LVL 2	brute forcedpimplementation
67	Squares CF-263/B	900	LVL 2	greedyimplementationsortings
68	Valera and Plates CF-369/A	900	LVL 2	greedyimplementation
69	Trace CF-157/B	1000	LVL 2	geometrysortings
70	Pasha and Stick CF-610/A	1000	LVL 2	combinatoricsmath
71	Queue on Bus Stop CF-435/A	1000	LVL 2	implementation
72	Lucky String CF-110/B	1100	LVL 2	constructive algorithmsstrings
73	Amr and Music CF-507/A	1000	LVL 2	greedyimplementationsortings
74	Eugeny and Array CF-302/A	800	LVL 2	implementation
75	Prison Transfer CF-427/B	1100	LVL 2	data structuresimplementation
76	Bear and Raspberry CF-385/A	1000	LVL 2	brute forcegreedyimplementation
77	Buttons CF-268/B	1000	LVL 2	implementationmath
78	Vasya and Digital Root CF-355/A	1100	LVL 2	constructive algorithmsimplementation
79	Little Elephant and Magic Square CF-259/B	1100	LVL 2	brute forceimplementation
80	Valera and X CF-404/A	1000	LVL 2	implementation
81	Game With Sticks CF-451/A	900	LVL 2	implementation
82	Devu, the Singer and Churu, the Joker CF-439/A	900	LVL 2	greedyimplementation
83	Roadside Trees (Simplified Edition) CF-265/B	1000	LVL 2	greedyimplementation
84	Valera and Antique Items CF-441/A	1000	LVL 2	implementation
85	Lecture CF-499/B	1000	LVL 2	implementationstrings
86	Domino Effect CF-405/B	1100	LVL 3
87	Sereja and Stairs CF-381/B	1100	LVL 3	greedyimplementationsortings
88	Eugeny and Play List CF-302/B	1200	LVL 3	binary searchimplementationtwo pointers
89	K-special Tables CF-625/C	1300	LVL 3	constructive algorithmsimplementation
90	Filya and Homework CF-714/B	1200	LVL 3	implementationsortings
91	Walking in the Rain CF-192/B	1100	LVL 3	brute forceimplementation
92	Rebranding CF-591/B	1200	LVL 3	implementationstrings
93	Polo the Penguin and Strings CF-288/A	1300	LVL 3	greedy
94	Bear and Elections CF-574/A	1200	LVL 3	greedyimplementation
95	Ohana Cleans Up CF-554/B	1200	LVL 3	brute forcegreedystrings
96	Little Elephant and Numbers CF-221/B	1300	LVL 3	implementation
97	Tiling with Hexagons CF-216/A	1200	LVL 3	implementationmath
98	Rook, Bishop and King CF-370/A	1100	LVL 3	graphsmathshortest paths
99	Snow Footprints CF-298/A	1300	LVL 3	greedyimplementation
100	Alyona and Mex CF-682/B	1200	LVL 3	sortings
101	After Training CF-195/B	1300	LVL 3	data structuresimplementationmath
102	Robot's Task CF-583/B	1200	LVL 3	greedyimplementation
103	Wilbur and Swimming Pool CF-596/A	1100	LVL 3	geometryimplementation
104	Permutation CF-359/B	1400	LVL 3	constructive algorithmsdpmath
105	War of the Corporations CF-625/B	1200	LVL 3	constructive algorithmsgreedystrings
106	Canvas Frames CF-127/B	1000	LVL 3	implementation
107	Alyona and Numbers CF-682/A	1100	LVL 3	constructive algorithmsmathnumber theory
108	Vika and Squares CF-610/B	1300	LVL 3	constructive algorithmsimplementation
109	Vasya and Football CF-493/A	1300	LVL 3	implementation
110	Whose sentence is it? CF-312/A	1100	LVL 3	implementationstrings
111	Vanya and Books CF-552/B	1200	LVL 3	implementationmath
112	Sockets CF-257/A	1100	LVL 3	greedyimplementationsortings
113	The Wall CF-340/A	1200	LVL 3	math
114	Digital Counter CF-495/A	1100	LVL 3	implementation
115	Bear and Strings CF-385/B	1200	LVL 3	brute forcegreedyimplementation +2
116	Bear and Poker CF-573/A	1300	LVL 3	implementationmathnumber theory
117	Ksenia and Pan Scales CF-382/A	1100	LVL 3	greedyimplementation
118	Phone Numbers CF-151/B	1200	LVL 3	implementationstrings
119	Inventory CF-569/B	1200	LVL 3	greedymath
120	Vitaliy and Pie CF-525/A	1100	LVL 3	greedyhashingstrings
121	Students and Shoelaces CF-129/B	1200	LVL 3	brute forcedfs and similargraphs +1
122	Wilbur and Array CF-596/B	1100	LVL 3	greedyimplementation
123	Strings of Power CF-318/B	1300	LVL 3	implementationstringstwo pointers
124	Misha and Changing Handles CF-501/B	1100	LVL 3	data structuresdsustrings
125	Levko and Permutation CF-361/B	1200	LVL 3	constructive algorithmsmathnumber theory
126	Bar CF-56/A	1000	LVL 3	implementation
127	Beautiful Paintings CF-651/B	1200	LVL 3	greedysortings
128	Combination CF-155/B	1100	LVL 3	greedysortings
129	MUH and Sticks CF-471/A	1100	LVL 3	implementation
130	Print Check CF-631/B	1200	LVL 3	constructive algorithmsimplementation
131	Art Union CF-416/B	1300	LVL 3	brute forcedpimplementation
132	Lala Land and Apple Trees CF-558/A	1100	LVL 3	brute forceimplementationsortings
133	Lucky Conversion CF-145/A	1200	LVL 3	greedyimplementation
134	Two Bases CF-602/A	1100	LVL 3	brute forceimplementation
135	The Monster and the Squirrel CF-592/B	1100	LVL 3	math
136	The Child and Homework CF-437/A	1300	LVL 3	implementation
137	Tavas and SaDDas CF-535/B	1100	LVL 3	bitmasksbrute forcecombinatorics +1
138	Dima and To-do List CF-366/B	1200	LVL 3	brute forceimplementation
139	Valuable Resources CF-485/B	1300	LVL 3	brute forcegreedy
140	Fox and Number Game CF-389/A	1000	LVL 3	greedymath
141	Unary CF-133/B	1200	LVL 3	implementation
142	Equidistant String CF-545/B	1100	LVL 3	greedy
143	Garland CF-408/B	1200	LVL 3	implementation
144	Coins CF-58/B	1300	LVL 3	greedy
145	Chewba?ca and Number CF-514/A	1200	LVL 3	greedyimplementation
146	Chat Online CF-469/B	1300	LVL 3	implementation
147	Elections CF-570/A	1100	LVL 3	implementation
148	George and Round CF-387/B	1200	LVL 3	brute forcegreedytwo pointers
149	Appleman and Toastman CF-461/A	1200	LVL 3	greedysortings
150	Petya and Staircases CF-362/B	1100	LVL 3	implementationsortings
151	Good Number CF-365/A	1100	LVL 3	implementation
152	A and B and Compilation Errors CF-519/B	1100	LVL 3	data structuresimplementationsortings
153	Simple Game CF-570/B	1300	LVL 3	constructive algorithmsgamesgreedy +2
154	Fedor and New Game CF-467/B	1100	LVL 3	bitmasksbrute forceconstructive algorithms +1
155	Drazil and Factorial CF-515/C	1400	LVL 3	greedymathsortings
156	Cifera CF-114/A	1000	LVL 3	math
157	A and B and Team Training CF-519/C	1300	LVL 3	greedyimplementationmath +1
158	Football Kit CF-432/B	1200	LVL 3	brute forcegreedyimplementation
159	Devu, the Dumb Guy CF-439/B	1200	LVL 3	implementationsortings
160	Anton and currency you all know CF-508/B	1300	LVL 3	greedymathstrings
161	Random Teams CF-478/B	1300	LVL 3	combinatoricsconstructive algorithmsgreedy +1
162	Bear and Three Musketeers CF-574/B	1500	LVL 4	brute forcedfs and similargraphs +1
163	Chris and Magic Square CF-711/B	1400	LVL 4	constructive algorithmsimplementation
164	Restoring Painting CF-675/B	1400	LVL 4	brute forceconstructive algorithmsmath
165	Point on Spiral CF-279/A	1400	LVL 4	brute forcegeometryimplementation
166	Vasya and the Bus CF-190/A	1100	LVL 4	greedymath
167	Guest From the Past CF-625/A	1700	LVL 4	implementationmath
168	Photographer CF-203/C	1400	LVL 4	greedysortings
169	Taxes CF-735/D	1600	LVL 4	mathnumber theory
170	Dima and Lisa CF-584/D	1800	LVL 4	brute forcemathnumber theory
171	Cows and Primitive Roots CF-284/A	1400	LVL 4	implementationmathnumber theory
172	MUH and Important Things CF-471/B	1300	LVL 4	implementationsortings
173	Pyramid of Glasses CF-676/B	1500	LVL 4	implementationmathmath
174	Approximating a Constant Range CF-602/B	1400	LVL 4	dpimplementationtwo pointers
175	PawnChess CF-592/A	1200	LVL 4	implementation
176	Non-square Equation CF-233/B	1400	LVL 4	binary searchbrute forcemath
177	Vasya and String CF-676/C	1500	LVL 4	binary searchdpstrings +1
178	DZY Loves Chemistry CF-445/B	1400	LVL 4	dfs and similardsugreedy
179	Valera and Contest CF-369/B	1400	LVL 4	constructive algorithmsimplementationmath
180	Guess a number! CF-416/A	1400	LVL 4	greedyimplementationtwo pointers
181	Burning Midnight Oil CF-165/B	1500	LVL 4	binary searchimplementation
182	Pythagorean Triples CF-707/C	1500	LVL 4	mathnumber theory
183	Replacement CF-570/C	1600	LVL 4	constructive algorithmsdata structuresimplementation
184	Woodcutters CF-545/C	1500	LVL 4	dpgreedy
185	Amr and The Large Array CF-558/B	1300	LVL 4	implementation
186	The Child and Set CF-437/B	1500	LVL 4	bitmasksgreedyimplementation +1
187	More Cowbell CF-604/B	1400	LVL 4	binary searchgreedy
188	Economy Game CF-681/B	1300	LVL 4	brute force
189	Soldier and Cards CF-546/C	1400	LVL 4	brute forcedfs and similargames
190	Pasha Maximizes CF-435/B	1400	LVL 4	greedy
191	Vasya and Wrestling CF-493/B	1400	LVL 4	implementation
192	OR in Matrix CF-486/B	1300	LVL 4	greedyhashingimplementation
193	Kefa and Company CF-580/B	1500	LVL 4	binary searchsortingstwo pointers
194	Soldier and Badges CF-546/B	1200	LVL 4	brute forcegreedyimplementation +1
195	Han Solo and Lazer Gun CF-514/B	1400	LVL 4	brute forcedata structuresgeometry +2
196	Kefa and Park CF-580/C	1500	LVL 4	dfs and similargraphstrees
197	Amr and Pins CF-507/B	1400	LVL 4	geometrymath
198	Two Substrings CF-550/A	1500	LVL 4	brute forcedpgreedy +2
199	Queue CF-545/D	1300	LVL 4	greedyimplementationsortings
200	Modulo Sum CF-577/B	1900	LVL 5	combinatoricsdata structuresdp +1

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