Problem:
Score : 500 points

Problem Statement

Takahashi has decided to work on K days of his choice from the N days starting with tomorrow.

You are given an integer C and a string S. Takahashi will choose his workdays as follows:

After working for a day, he will refrain from working on the subsequent C days.

If the i-th character of S is x, he will not work on Day i, where Day 1 is tomorrow, Day 2 is the day after tomorrow, and so on.

Find all days on which Takahashi is bound to work.

Constraints

1 \leq N \leq 2 \times 10^5

1 \leq K \leq N

0 \leq C \leq N

The length of S is N.

Each character of S is o or x.

Takahashi can choose his workdays so that the conditions in Problem Statement are satisfied.

Input

Input is given from Standard Input in the following format:

N K C
S

Output

Print all days on which Takahashi is bound to work in ascending order, one per line.

Sample Input 1

11 3 2
ooxxxoxxxoo

Sample Output 1

6

Takahashi is going to work on 3 days out of the 11 days. After working for a day, he will refrain from working on the subsequent 2 days.

There are four possible choices for his workdays: Day 1,6,10, Day 1,6,11, Day 2,6,10, and Day 2,6,11.

Thus, he is bound to work on Day 6.

Sample Input 2

5 2 3
ooxoo

Sample Output 2

1
5

There is only one possible choice for his workdays: Day 1,5.

Sample Input 3

5 1 0
ooooo

Sample Output 3

There may be no days on which he is bound to work.

Sample Input 4

16 4 3
ooxxoxoxxxoxoxxo

Sample Output 4

11
16

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <bits/stdc++.h>
using namespace std;
#define forn(i, n) for(int i = 0; i < int(n); i++)
#define fore(i, l, r) for(int i = int(l); i < int(r); i++)
#define pb push_back
#define deb(x) cout<<#x<<" "<<x<<endl;
#define deb2(x, y) cout<<#x<<" "<<x<<" "<<#y<<" "<<y<<endl;
#define deb3(x, y, z) cout<<#x<<" "<<x<<" "<<#y<<" "<<y<<" "<<#z<<" "<<z<<endl;
#define all(x) x.begin(), x.end()
typedef long long ll;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ll> vl;
typedef vector<vector<ll>> vvl;
typedef vector<string> vs;
typedef vector<bool> vb;
typedef pair<int, int> pii;
const int mod = 1e9 + 7;
template<class T, class U> inline void add_self(T &a, U b){a += b;if (a >= mod) a -= mod;if (a < 0) a += mod;}
template<class T, class U> inline void min_self(T &x, U y) { if (y < x) x = y; }
template<class T, class U> inline void max_self(T &x, U y) { if (y > x) x = y; }

template <typename T>void print(T v, bool show_index = false){int w = 2;if(show_index){for(int i=0; i<v.size(); i++)cout<<setw(w)<<i<<" ";cout<<endl;}for(auto i= v.begin(); i!=v.end(); i++)cout<<setw(w)<<*i<<" ";cout<<endl;}
template <typename T>void print_vv(T v){if(v.size()==0) {cout<<"Empty"<<endl; return;} int w = 3;cout<<setw(w)<<" ";for(int j=0; j<v[0].size(); j++)cout<<setw(w)<<j<<" ";cout<<endl;for(auto i= 0; i<v.size(); i++){cout<<i<<" {";for(auto j = 0; j!=v[i].size(); j++){cout<<setw(w)<<v[i][j]<<",";}cout<<"},"<<endl;}cout<<endl;}
template <class T, class U> void print_m(map<T,U> m, int w=3){if(m.empty()){cout<<"Empty"<<endl; return;}for(auto x: m)cout<<"("<<x.first<<": "<<x.second<<"),"<<endl;cout<<endl;}

int main(){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n,k,c;
    while(cin>>n>>k>>c){
        string s;
        cin>>s;

        vi l(n);
        int rest = 0;
        int w = k;
        
        forn(i,n){
            if(rest<=0 && s[i]=='o'){
                l[i] = 1;
                rest = c;
                --w;
            }else{
                --rest;
            }
            if(w==0) break;
        }

        vi ans;
        rest = 0; w =k;
        for(int i=n-1; i>=0; --i){
            if(rest<=0 && s[i]=='o'){
                if(l[i]==1) ans.push_back(i+1);
                rest = c;
                --w;
            }else{
                --rest;
            }
            if(w==0) break;
        }

        // print(s,1);
        // print(l);
        sort(all(ans));
        for(auto x: ans)
            cout<<x<<" ";
        cout<<endl;


    }
    return 0;
}