timus 1881

#include<iostream>
#include<string>
#include<cstdlib>
#include<algorithm>
#include<cmath>
#include<cstring>
using namespace std;
const int MAXN = 10000;
string a;
int main() {
    int h, w, n, cnt = 0, cnt1 = 1, cnt2 = 1, pr = 0;
    cin >> h >> w >> n;
    for (int i = 0; i < n; i++) {
        cin >> a;
        if (pr != 0)
        cnt += a.length() + 1;
        else cnt = a.length();
        if (cnt > w) {
            cnt1++;
            cnt = a.length();
            pr = 0;
        }
        if (cnt1 > h) {
            cnt2++;
            cnt1 = 1;
        }
        pr++;
    }
    cout << cnt2;
    system("pause");
    return 0;
}