haha

#include <iostream>
#include <vector>
#include <string>
#include <math.h>

using namespace std;

vector <vector<int>> g;
int index = 1;
int n;
vector<bool> flag;
int counter = 0;
vector<int> a;
int ans = 0;

void getline(int i, string& s) {
    int j = 0;
    while (s[index] != ']') {
        if (isdigit(s[index])) {
            if (s[index] == '1')
                g[i].push_back(j);
            j++;
        }

        index++;
    }
}

void getvec(string& s, int n) {

    for (int i = 0; i < n; i++) {
        getline(i, s);
        index += 3;
    }
}

int getlen(string& s) {

    int n = 0;
    int ind = 1;
    while (s[ind] != ']') {
        if (isdigit(s[ind]))
            ++n;
        ind++;

    }

    return n;

}

void dfs(int v) {
    flag[v] = true;
    ++counter;
    for (int u : g[v]) {
        if (!flag[u] && u != v) {
            dfs(u);
        }
    }
}

int main() {
    string s;
    getline(cin, s);
    s = s.substr(2, s.size() - 3);
    int m = s[s.size() - 1] - '0';
    n = getlen(s);
    flag.resize(n);
    g.resize(n);
    s = s.substr(0, s.size() - 3);
    getvec(s, n);
    for (int i = 0; i < n; i++) {
        if (!flag[i]) {
            counter = 0;
            dfs(i);
            if (counter == 1)
                ++ans;
            else
                a.push_back(counter);
        }
    }

    for (int i = 0; i < a.size(); i++)
        ans += ceil(1.0 * a[i] / m);


    cout << ans;
}