Problem Hyeonsu must plan a one-year course. There are compulsory subjects in class. These compulsory courses must be completed, and the order is set. If there are total subjects A, B, C, D, E, F, G, and the compulsory subjects are given as CBA, the compulsory subjects are C, B, and A subjects, and…
Problem The only daughter Princess of the neighboring country of the information kingdom has been captured by a monster in the forest. There are N princes in the information kingdom, and they both agree to go rescue the princess. The king of the information kingdom decides which prince to go to…
Problem I am trying to cut several iron rods with a laser. For efficient operation, the iron rods are stacked from the bottom up, and the laser is fired vertically from above to cut the iron rods. The arrangement of the iron rod and laser satisfies the following conditions. An iron rod can only be…
Problem Write a program that outputs the result of the operation given a postfix expression. If 3(5+2)-9 is expressed as a postfix expression, it is expressed as 352+9- and the result is 12. input Postfix expression is given in the first line. The length of the expression cannot exceed 5…
Problem Jordi, a game developer, wants to make a crane puppet machine into a mobile game. In order to increase the fun of the game, Jordi tries to reflect the screen composition and rules in the game logic as follows. The game screen is an N x N square grid of 1 x 1 squares with a crane on the top…
Problem Write a program that removes all characters between parentheses ( ) in the input string and prints only the remaining characters. input A string of parentheses is entered on the first line The length of the string does not exceed 100. output Only the remaining characters are printed…
Problem If parentheses are entered, it outputs “YES” if it is a valid parenthesis, and “NO” if it is not correct. (())() This is the correct placement of the pair of parentheses, but (()())) is not the correct parentheses. input A string of parentheses is entered on the first line The maximum length…