L? Trnh Luy?n Thi L?p Trnh Thi ??u (CSES)

M?t l? trnh c c?u trc ?? gi?i quy?t cc bi ton trn CSES v nng cao k? n?ng.

Trở về lộ trình
Giai ?o?n Ch? ?? chnh Danh sch Bi t?p M?c tiu
1 Introductory Problems
  • Weird Algorithm
  • Missing Number
  • Repetitions
  • Increasing Array
  • Permutations
 N?m v?ng cc khi ni?m l?p trnh c? b?n v x? l I/O.
2 S?p x?p v Tm ki?m
  • Distinct Numbers
  • Ferris Wheel
  • Concert Tickets
  • Sum of Two Values
 p d?ng hi?u qu? cc thu?t ton s?p x?p v tm ki?m nh? phn.
3 Quy ho?ch ??ng
  • Dice Combinations
  • Minimizing Coins
  • Removing Digits
  • Grid Paths
 Gi?i quy?t bi ton t?i ?u ha b?ng cch chia thnh bi ton con.
4 Thu?t ton ?? th?
  • Building Roads
  • Message Route
  • Building Teams
 N?m v?ng cc thu?t ton duy?t v tm ???ng ?i trn ?? th?.
5 Truy v?n Kho?ng
  • Static Range Sum
  • Dynamic Range Sum
  • Range Minimum Queries
 S? d?ng CTDL nh? cy phn ?o?n ?? x? l truy v?n hi?u qu?.
6 Tree Algorithms
  • Subordinates
  • Tree Diameter
  • Tree Distances I
  • Company Queries I
 p d?ng cc thu?t ton trn c?u trc d? li?u cy.
7 Ton h?c
  • Common Divisors
  • Counting Divisors
  • Creating Strings
 Gi?i cc bi ton lin quan ??n l thuy?t s? v t? h?p.

T? duy C?t li cho L?p trnh vin Thi ??u

1. Phn r v Chinh ph?c

Chia nh? m?i v?n ?? ph?c t?p thnh cc bi ton con nh? nh?t, ??n gi?n nh?t. Gi?i quy?t cc tr??ng h?p ??n gi?n tr??c (v d?: v?i n=1, n=2) ?? xy d?ng tr?c gic tr??c khi t?ng qut ha.

2. Nh?n d?ng M?u c? b?n

H?u h?t cc v?n ?? l bi?n th? c?a m?t m?u ho?c thu?t ton ? bi?t. Hy t? h?i: "?y c ph?i l bi ton s?p x?p khng? M?t bi duy?t ?? th?? Hay m?t bi ton quy ho?ch ??ng tr hnh?"

3. Ch tr?ng vo Rng bu?c & Cc tr??ng h?p Bin

Cc rng bu?c (v d?: N <= 10^5) l m?t g?i l?n v? ?? ph?c t?p th?i gian c?n thi?t. Lun xem xt cc tr??ng h?p bin: ??u vo r?ng, n=0, gi tr? l?n, v.v.

4. Luy?n t?p c Ch? ?ch

??ng ch? gi?i nh?ng bi ton b?n ? bi?t cch gi?i. Sau m?t cu?c thi, hy upsolve: dnh th?i gian ?? hi?u v tri?n khai gi?i php cho nh?ng bi b?n khng th? gi?i ???c.