Problem Set - SAST OJ

	ID	Problem Show tags Hide tags	AC / Tried	Difficulty
	1456	codeforces#P1641A Great Sequence brute force greedy sortings *1200	0 / 0	4
	1455	codeforces#P1641B Repetitions Decoding constructive algorithms implementation sortings *2000	0 / 0	7
	1454	codeforces#P1641C Anonymity Is Important binary search brute force data structures dsu greedy sortings *2200	0 / 0	8
	1453	codeforces#P1641D Two Arrays bitmasks brute force combinatorics greedy hashing math two pointers *2700	0 / 0	10
	1452	codeforces#P1641E Special Positions combinatorics divide and conquer fft math *3300	0 / 0	10
	1451	codeforces#P1641F Covering Circle geometry *3500	0 / 0	10
	1450	codeforces#P1642A Hard Way geometry *800	0 / 0	3
	1449	codeforces#P1642B Power Walking greedy *900	0 / 0	3
	1448	codeforces#P1644A Doors and Keys implementation *800	0 / 0	3
	1447	codeforces#P1644B Anti-Fibonacci Permutation brute force constructive algorithms implementation *800	0 / 0	3
	1446	codeforces#P1644C Increase Subarray Sums brute force dp greedy implementation *1400	0 / 0	4
	1445	codeforces#P1644D Cross Coloring data structures implementation math *1700	0 / 0	5
	1444	codeforces#P1644E Expand the Path brute force combinatorics data structures implementation math *1900	0 / 0	6
	1443	codeforces#P1644F Basis combinatorics fft math number theory *2900	0 / 0	10
	1442	codeforces#P1646A Square Counting math *800	0 / 0	3
	1441	codeforces#P1646B Quality vs Quantity brute force constructive algorithms greedy sortings two pointers *800	0 / 0	3
	1440	codeforces#P1646C Factorials and Powers of Two bitmasks brute force constructive algorithms dp math *1500	0 / 0	5
	1439	codeforces#P1646D Weight the Tree constructive algorithms dfs and similar dp implementation trees *2000	0 / 0	7
	1438	codeforces#P1646E Power Board brute force dp math number theory *2200	0 / 0	8
	1437	codeforces#P1646F Playing Around the Table constructive algorithms greedy implementation *2900	0 / 0	10
	1436	codeforces#P1647A Madoka and Math Dad implementation math *800	0 / 0	3
	1435	codeforces#P1647B Madoka and the Elegant Gift brute force constructive algorithms graphs implementation *1200	0 / 0	4
	1434	codeforces#P1647C Madoka and Childish Pranks constructive algorithms greedy *1300	0 / 0	4
	1433	codeforces#P1647D Madoka and the Best School in Russia constructive algorithms dp math number theory *1900	0 / 0	6
	1432	codeforces#P1647E Madoka and the Sixth-graders data structures dfs and similar greedy *2500	0 / 0	9
	1431	codeforces#P1647F Madoka and Laziness dp greedy *3100	0 / 0	10
	1430	codeforces#P1648A Weird Sum combinatorics data structures geometry math matrices sortings *1400	0 / 0	4
	1429	codeforces#P1648B Integral Array brute force constructive algorithms data structures math *1800	0 / 0	6
	1428	codeforces#P1648C Tyler and Strings combinatorics data structures implementation *1900	0 / 0	6
	1427	codeforces#P1648D Serious Business data structures divide and conquer dp implementation shortest paths *2800	0 / 0	10
	1426	codeforces#P1648E Air Reform data structures dfs and similar divide and conquer dsu graphs implementation trees *3200	0 / 0	10
	1425	codeforces#P1648F Two Avenues data structures dfs and similar graphs *3500	0 / 0	10
	1424	codeforces#P1649A Game implementation *800	0 / 0	3
	1423	codeforces#P1649B Game of Ball Passing greedy implementation *1300	0 / 0	4
	1422	codeforces#P1650A Deletions of Two Adjacent Letters implementation strings *800	0 / 0	3
	1421	codeforces#P1650B DIV + MOD math *900	0 / 0	3
	1420	codeforces#P1650C Weight of the System of Nested Segments greedy hashing implementation sortings *1200	0 / 0	4
	1419	codeforces#P1650D Twist the Permutation brute force constructive algorithms implementation math *1300	0 / 0	4
	1418	codeforces#P1650E Rescheduling the Exam binary search data structures greedy implementation math sortings *1900	0 / 0	6
	1417	codeforces#P1650F Vitaly and Advanced Useless Algorithms dp greedy implementation *2200	0 / 0	8
	1416	codeforces#P1650G Counting Shortcuts data structures dfs and similar dp graphs shortest paths *2100	0 / 0	7
	1415	codeforces#P1651A Playoff implementation *800	0 / 0	3
	1414	codeforces#P1651B Prove Him Wrong constructive algorithms greedy *800	0 / 0	3
	1413	codeforces#P1651C Fault-tolerant Network brute force data structures implementation *1500	0 / 0	5
	1412	codeforces#P1651D Nearest Excluded Points binary search data structures dfs and similar graphs shortest paths *1900	0 / 0	6
	1411	codeforces#P1651E Sum of Matchings brute force combinatorics constructive algorithms dfs and similar graph matchings greedy math *2600	0 / 0	10
	1410	codeforces#P1651F Tower Defense binary search brute force data structures *3000	0 / 0	10
	1409	codeforces#P1654A Maximum Cake Tastiness brute force greedy implementation sortings *800	0 / 0	3
	1408	codeforces#P1654B Prefix Removals strings *800	0 / 0	3
	1407	codeforces#P1654C Alice and the Cake data structures greedy implementation sortings *1400	0 / 0	4
	1406	codeforces#P1654D Potion Brewing Class dfs and similar math number theory trees *2100	0 / 0	7
	1405	codeforces#P1654E Arithmetic Operations brute force data structures graphs math *2300	0 / 0	8
	1404	codeforces#P1654F Minimal String Xoration bitmasks data structures divide and conquer greedy hashing sortings strings *2800	0 / 0	10
	1403	codeforces#P1654G Snowy Mountain data structures dfs and similar graphs greedy shortest paths trees *2900	0 / 0	10
	1402	codeforces#P1654H Three Minimums combinatorics constructive algorithms divide and conquer dp fft math *3500	0 / 0	10
	1401	codeforces#P1656A Good Pairs math sortings *800	0 / 0	3
	1400	codeforces#P1656B Subtract Operation data structures greedy math two pointers *1100	0 / 0	3
	1399	codeforces#P1656C Make Equal With Mod constructive algorithms math number theory sortings *1200	0 / 0	4
	1398	codeforces#P1656D K-good constructive algorithms math number theory *1900	0 / 0	6
	1397	codeforces#P1656E Equal Tree Sums constructive algorithms dfs and similar math trees *2200	0 / 0	8
	1396	codeforces#P1656F Parametric MST binary search constructive algorithms graphs greedy math sortings *2600	0 / 0	10
	1395	codeforces#P1656G Cycle Palindrome constructive algorithms graphs math *3200	0 / 0	10
	1394	codeforces#P1656H Equal LCM Subsets data structures math number theory *3200	0 / 0	10
	1393	codeforces#P1656I Neighbour Ordering constructive algorithms graphs *3500	0 / 0	10
	1392	codeforces#P1657A Integer Moves brute force math *800	0 / 0	3
	1391	codeforces#P1657B XY Sequence greedy *800	0 / 0	3
	1390	codeforces#P1657C Bracket Sequence Deletion greedy implementation *1200	0 / 0	4
	1389	codeforces#P1657D For Gamers binary search brute force greedy math sortings *2000	0 / 0	7
	1388	codeforces#P1657E Star MST combinatorics dp graph matchings math *2200	0 / 0	8
	1387	codeforces#P1657F Words on Tree 2-sat dfs and similar dsu graphs trees *2600	0 / 0	10
	1386	codeforces#P1658A Marin and Photoshoot constructive algorithms implementation math *800	0 / 0	3
	1385	codeforces#P1658B Marin and Anti-coprime Permutation combinatorics math number theory *800	0 / 0	3
	1384	codeforces#P1658C Shinju and the Lost Permutation constructive algorithms math *1700	0 / 0	5
	1383	codeforces#P1658D1 388535 (Easy Version) bitmasks math *1600	0 / 0	5
	1382	codeforces#P1658D2 388535 (Hard Version) bitmasks brute force data structures math *2300	0 / 0	8
	1381	codeforces#P1658E Gojou and Matrix Game data structures dp games hashing implementation math number theory sortings *2500	0 / 0	9
	1380	codeforces#P1658F Juju and Binary String brute force constructive algorithms greedy math *2700	0 / 0	10
	1379	codeforces#P1659A Red Versus Blue constructive algorithms greedy implementation math *1000	0 / 0	3
	1378	codeforces#P1659B Bit Flipping bitmasks constructive algorithms greedy strings *1300	0 / 0	4
	1377	codeforces#P1659C Line Empire binary search brute force dp greedy implementation math *1500	0 / 0	5
	1376	codeforces#P1659D Reverse Sort Sum constructive algorithms data structures greedy implementation math two pointers *1900	0 / 0	6
	1375	codeforces#P1659E AND-MEX Walk bitmasks brute force constructive algorithms dfs and similar dsu graphs *2200	0 / 0	8
	1374	codeforces#P1659F Tree and Permutation Game dfs and similar games graphs trees *3000	0 / 0	10
	1373	codeforces#P1660A Vasya and Coins greedy math *800	0 / 0	3
	1372	codeforces#P1660B Vlad and Candies math *800	0 / 0	3
	1371	codeforces#P1660C Get an Even String dp greedy strings *1300	0 / 0	4
	1370	codeforces#P1660D Maximum Product Strikes Back brute force implementation math two pointers *1600	0 / 0	5
	1369	codeforces#P1660E Matrix and Shifts brute force constructive algorithms greedy implementation *1600	0 / 0	5
	1368	codeforces#P1660F1 Promising String (easy version) brute force implementation math strings *1700	0 / 0	5
	1367	codeforces#P1660F2 Promising String (hard version) data structures implementation math strings *2100	0 / 0	7
	1366	codeforces#P1661A Array Balancing greedy math *800	0 / 0	3
	1365	codeforces#P1661B Getting Zero bitmasks brute force dfs and similar dp graphs greedy shortest paths *1300	0 / 0	4
	1364	codeforces#P1661C Water the Trees binary search greedy math *1700	0 / 0	5
	1363	codeforces#P1661D Progressions Covering data structures greedy *1900	0 / 0	6
	1362	codeforces#P1661E Narrow Components brute force data structures dp dsu math trees *2500	0 / 0	9
	1361	codeforces#P1661F Teleporters binary search greedy *2600	0 / 0	10
	1360	codeforces#P1662A Organizing SWERC brute force implementation	0 / 0	(None)
	1359	codeforces#P1662B Toys greedy strings	0 / 0	(None)
	1358	codeforces#P1662C European Trip dp graphs math matrices	0 / 0	(None)
	1357	codeforces#P1662D Evolution of Weasels greedy implementation strings	0 / 0	(None)

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