We are OIers

E. Riding in a Lifttime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputImagine that you are in a building that

A. Bayan Bustime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThe final round of Bayan Programming Contest w

B. MUH and Important Thingstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputIt's time polar bears Menshykov

A. MUH and Stickstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputTwo polar bears Menshykov and Uslada from

C. Number of Waystime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou've got array a[1], a[2], ..., a[n], c

B. Wonder Roomtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputThe start of the new academic year brought ab

A. Cheap Traveltime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputAnn has recently started commuting by subway

D. Pashmak and Parmida's problemtime limit per test3 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputParmida is a clever girl a

A. Pashmak and Gardentime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPashmak has fallen in love with an att

E. Pashmak and Graphtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPashmak's homework is a problem about g

B. Pashmak and Flowerstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPashmak decided to give Parmida a pai

B. Strongly Connected Citytime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputImagine a city with n horizontal

A. Design Tutorial: Learn from Mathtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputOne way to create a task

A. Expressiontime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPetya studies in a school and he adores Maths.

B. Random Teamstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputn participants of the competition were split

C. Table Decorationstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou have r red, g green and b blue ba

D. Long Jumpstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputValery is a PE teacher at a school in Berland.

A. Initial Bettime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere are five people playing a game called "

C. Examstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputStudent Valera is an undergraduate student at the U

D. Red-Green Towerstime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere are r red and g green blocks fo

D. Design Tutorial: Inverse the Problemtime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere is an easy wa

C. Design Tutorial: Make It Nondeterministictime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputA way to make

B. Design Tutorial: Learn from Lifetime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputOne way to create a task

C. Pashmak and Busestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputRecently Pashmak has been employed in a

A. Eeveetime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou are solving the crossword problem K from IPSC 2

#include#include#include#include#define ll long long #define inf 0x7fffffffusing namespace std;inline int read(){ int x=0,f=1;char ch=getchar(); while(ch'0'||ch>'9'){if(ch=='-')f=-1;ch

A. The Child and Homeworktime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputOnce upon a time a child got a tes

B. The Child and Settime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputAt the children's day, the child came t

C. The Child and Toytime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputOn Children's Day, the child got a toy

D. The Child and Zootime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputOf course our child likes walking in a

A. Queue on Bus Stoptime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputIt's that time of the year when the Rus

B. Suffix Structurestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputBizon the Champion isn't just a bison.

A. Rewardstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputBizon the Champion is called the Champion for a r

D. Multiplication Tabletime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputBizon the Champion isn't just charmi

C. DZY Loves Fibonacci Numberstime limit per test4 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputIn mathematical terms, the s

A. DZY Loves Chessboardtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputDZY loves chessboard, and he enjoys

A. DZY Loves Physicstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputDZY loves Physics, and he enjoys calcul

A. 24 Gametime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputLittle X used to play a card game called "24 Game

B. DZY Loves Chemistrytime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputDZY loves chemistry, and he enjoys mi

C. George and Jobtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputThe new ITone 6 has been released recently