#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main() {
    vector<vector<int>> v = {{0, 1, 2},
                             {},
                             {0}};
    auto count = count_if(
        begin(v), end(v),
        [](const vector<int>& s) {
            return s.size() > 0;
        }
    );
    cout << count << endl;
    return 0;
}