10-19 AC

2018-08-01 02:30:29 +08:00
parent 36f2ab51ab
commit cc6cf4cdea
10 changed files with 261 additions and 0 deletions
--- a/2011.cpp
+++ b/2011.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <iomanip>
+using namespace std;
+int main(){
+    int n,m;
+    double t;
+    cin >> n;
+    for(int i=0;i<n;i++){
+        t = 0;
+        cin >> m;
+        if(m==1){
+            cout << "1.00" << endl;
+            continue;
+        }
+        for(int j =m/2+1;j<=m-m%2;j++)
+            t += 1.0/j;
+        t += m%2==0?0:1.0/m;
+        cout << setiosflags(ios::fixed) << setprecision(2) << t << endl;
+    }
+}