#include <bits/stdc++.h>

using namespace std;
int cnt;

/**
asdfAcdcdfLanQiaoCsldfjsdLanqiAoxvcxvx
 */
int main() {
    string a;
    cin >> a;
    for (int i = 0; i < a.size(); i++)
        if (a[i] >= 'A' && a[i] <= 'Z')a[i] += 32;

    for (int i = 0; i < a.size(); i++)
        if (a.substr(i, 7) == "lanqiao") cnt++;
    printf("%d", cnt);
    return 0;
}