BOJ 14169 Laser and Mirrors
https://www.acmicpc.net/problem/14169 14169번: Lasers and Mirrors The first line of input contains 5 space-separated integers: N,xL,yL,xB,yB, where (xL,yL) is the location of the laser and (xB,yB) is the location of the barn. All coordinates are between 0 and 1,000,000,000. The next N lines each contain the x and y locat www.acmicpc.net 풀이를 떠올리는건 어렵지 않았는데, 크고작은 구현 문제가 있었다. 하여 오답노트 차 적어본다. 풀이는 다음과..