백준 - 2775 부녀회장이 될테야 풀이

문제

2775 부녀회장이 될테야

풀이

층\호	1	2	3
2	1	4	10
1	1	3	6
0	1	2	3

답

kotlin code

fun main() {
    q2775()
}

fun q2775() {
    val inputs = Array(readln().toInt()){Pair(readln().toInt(), readln().toInt())}

    val maxHeight = inputs.maxOf { it.first }
    val maxWidth = inputs.maxOf { it.second }
    val building = Array(maxHeight+1) { IntArray(maxWidth) }
    for (w in 0 until maxWidth) {
        building[0][w] = w + 1
    }
    for(h in 1..maxHeight) {
        for(w in 0 until maxWidth) {
            building[h][w] = building[h-1].copyOfRange(0, w+1).sum()
        }
    }

    for(input in inputs) {
        println(building[input.first][input.second-1])
    }
}