Taulukko

input/code.cpp: In function 'int main()':
input/code.cpp:22:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while(s.size() <= k && oikea < n){
               ~~~~~~~~~^~~~
input/code.cpp:22:32: error: 'oikea' was not declared in this scope
         while(s.size() <= k && oikea < n){
                                ^~~~~

#include <bits/stdc++.h>
 
using namespace std;
 
int n, k;
long long c=0;
 
int t[1010101];
 
set<int> s;
 
int main(){
 
    cin>>n>>k;
 
    for(int i=0; i<n; i++)cin>>t[i];
 
    for(int vasen=0; vasen<n; vasen++){
 
        s.insert(t[vasen]);
 
        while(s.size() <= k && oikea < n){
            s.insert(t[oikea]);
            c++;
            oikea++;
        }
 
        s.erase(t[vasen]);
    }
 
    cout<<c<<"\n";
 
 
    return 0;
}