time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Gerald bought two very rare paintings at the Sotheby's auction and he now wants to hang them on the wall. For that he bought a special board to…
time limit per test4 seconds memory limit per test256 megabytes inputstandard input outputstandard output Peppa the Pig was walking and walked into the forest. What a strange coincidence! The forest has the shape of a rectangle, consisting of n rows…
time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Vanya has a table consisting of 100 rows, each row contains 100 cells. The rows are numbered by integers from 1 to 100 from bottom to top, the c…
time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Ilya is an experienced player in tic-tac-toe on the 4 × 4 field. He always starts and plays with Xs. He played a lot of games today with his fri…
time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output On the Literature lesson Sergei noticed an awful injustice, it seems that some students are asked more often than others. Seating in the class lo…
time limit per test3 seconds memory limit per test256 megabytes inputstandard input outputstandard output Two soldiers are playing a game. At the beginning first of them chooses a positive integer n and gives it to the second soldier. Then the second…
time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output The country Treeland consists of n cities connected with n - 1 bidirectional roads in such a way that it's possible to reach every city starting…
time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Anton likes to play chess, and so does his friend Danik. Once they have played n games in a row. For each game it's known who was the winner - An…
time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output Anton loves transforming one permutation into another one by swapping elements for money, and Ira doesn't like paying for stupid games. Help them…
