fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5.     int n;
  6.     cin>>n;
  7.     vector<int> arr(n);
  8.     for(int i=0;i<n;i++ )
  9.     {
  10.         cin>>arr[i];
  11.     }
  12.     int l=0,r=n-1;
  13.     int fo=-1;
  14.     while(l<=r)
  15.     {
  16.         int mid=(l+r)/2;
  17.         if(arr[mid]==0)
  18.         {
  19.             l=mid+1;
  20.         }
  21.         else
  22.         {
  23.             fo=mid;
  24.             r=mid-1;
  25.  
  26.         }
  27.     }
  28.     cout<<fo;
  29.  
  30.     return 0;
  31. }
Success #stdin #stdout 0.01s 5308KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
-1
https://ideone.com/TRXMrk
language:
C++ (gcc 8.3)
created:
14 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!