fork download
copy 
  1. ///sliding window
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4.  
  5. long long int arr[500050];
  6. int cum[500050];
  7.  
  8. int main(){
  9.  
  10.    long long int n, k,index=0;
  11.     cin>>n>>k;
  12.     for(long long int i=1; i<=n; i++){
  13.         cin>>arr[i];
  14.     }
  15.     for(long long int i=1; i<=n; i++){
  16.         cum[i]=arr[i]+cum[i-1];
  17.         //cout<<cum[i]<<"\n"; ///Cumulative Sum
  18.     }
  19.  
  20.     long long int sum=INT_MAX;
  21.     for(long long int i=k; i<=n; i++){
  22.        long long int temp=cum[i]-cum[i-k];
  23.         if(temp<sum){
  24.             sum=temp;
  25.             index=i;
  26.         }
  27.     }
  28.     cout<<index<<"\n";
  29.     return 0;
  30. }
  31.  
  32.  
Success #stdin #stdout 0s 5480KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
0
https://ideone.com/ZlF6PD
language:
C++ (gcc 8.3)
created:
2 years 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!