create dev channel

zeta/kt/completed/1149.kt

@@ -0,0 +1,32 @@
+import kotlin.math.min
+
+fun List<Int>.toTriple(): Triple<Int, Int, Int> {
+    return Triple(this[0], this[1], this[2])
+}
+
+
+fun solve(N: Int, C: Array<Triple<Int, Int, Int>>): Int {
+    val T = Array<Triple<Int, Int, Int>>(N) { Triple(0, 0, 0) }
+    T[0] = C[0]
+
+    for (i in 1 until N) {
+        T[i] = Triple(
+            min(T[i - 1].second, T[i - 1].third) + C[i].first,
+            min(T[i - 1].first, T[i - 1].third) + C[i].second,
+            min(T[i - 1].first, T[i - 1].second) + C[i].third
+        )
+    }
+
+    return minOf(T[N - 1].first, T[N - 1].second, T[N - 1].third)
+}
+
+fun main() {
+    val N = readln().toInt()
+    val C = Array<Triple<Int, Int, Int>>(N) {
+        readln().split(' ').map { s: String ->
+            s.toInt()
+        }.toTriple()
+    }
+
+    println(solve(N, C))
+}