УРКОП 2011: I

#include <cstdio>
#include <iostream>
#include <string>

using namespace std;

string s;

int main() {
    int h, w, n, now_pos = 0, now_string = 1;
    cin >> h >> w >> n;

    for (int i = 0; i < n; i++) {
        cin >> s;
        int l = s.size();
        if (now_pos + l > w) {
            now_pos = l + 1;
            now_string++;
        }
        else
            now_pos += l + 1;
    }

    cout << (now_string / h) + int(now_string % h != 0);

    return 0;
}