complete 12015.kt 12738.kt 14626.kt 33985.kt 34029.kt 34060.kt 9252.py

storage/zeta/kt/completed/34029.kt

@@ -0,0 +1,42 @@
+import java.io.StreamTokenizer
+import kotlin.math.pow
+
+
+class BinomialSuccessiveCalculator(val p: Double /* ensure 1 > p > 0*/, val n: Int /*300 >= n >= 1*/) {
+    var cumulative: Double = 0.0
+    var before: Double = 0.0
+    var k: Int = -1
+
+    val p_ratio = p / (1.0 - p)
+    fun next() {
+
+        if (k == -1) {
+            before = (1 - this.p).pow(n)
+        } else {
+            before = before * (n - k).toDouble() / (k + 1).toDouble() * p_ratio
+        }
+
+        cumulative += before
+        k++
+    }
+
+    fun minTrialToTrust(): Int {
+        while (cumulative < 0.05) {
+            next()
+        }
+        return this.k
+    }
+}
+
+fun main() = with(StreamTokenizer(System.`in`.bufferedReader())) {
+    nextToken()
+    val 타율 = nval
+    nextToken()
+    val 타석 = nval.toInt()
+
+
+    val bsc = BinomialSuccessiveCalculator(타율, 타석)
+    println(bsc.minTrialToTrust())
+
+
+}