From f279107065146a4940f5e73602a1c3c09e58b31d Mon Sep 17 00:00:00 2001
From: Santo Cariotti <dcariotti24@gmail.com>
Date: Sun, 18 Oct 2020 18:56:43 +0200
Subject: chore: name of first year folder

---
 1_anno/Programmazione_2/algorithms/cbrt.cc | 37 ++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 1_anno/Programmazione_2/algorithms/cbrt.cc

(limited to '1_anno/Programmazione_2/algorithms/cbrt.cc')

diff --git a/1_anno/Programmazione_2/algorithms/cbrt.cc b/1_anno/Programmazione_2/algorithms/cbrt.cc
new file mode 100644
index 0000000..30c7792
--- /dev/null
+++ b/1_anno/Programmazione_2/algorithms/cbrt.cc
@@ -0,0 +1,37 @@
+#include<iostream>
+
+using namespace std;
+
+int cbrt(int n) {
+    int i = 0;
+    int j = n;
+    int q = (i+j)/2;
+    while(q*q*q != n) {
+        q = (i+j)/2;
+        if(q*q*q < n)
+            i=q;
+        else
+            j=q;
+    }
+    return q;
+}
+
+double cbrt2(int n) {
+    int i = 1;
+    while(i*i*i <= n)
+        ++i;
+    // precision
+    
+    --i;
+    while(i*i*i < n)
+        i+=0.000001;
+    
+    return i;
+}
+
+int main() {
+    int i;
+    cin >> i;
+    cout << i << ' ' << cbrt(i) << endl;
+    return 0;
+}
-- 
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