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#include "bits/stdc++.h"
using namespace std;
using LL = long long;
#define FOR(i, l, r) for(int i = (l); i <= (r); ++i)
#define REP(i, n) FOR(i, 0, (n) - 1)
template<class T> int size(T &&x) {
	return int(x.size());
}
template<class A, class B> ostream& operator<<(ostream &out, const pair<A, B> &p) {
	return out << '(' << p.first << ", " << p.second << ')';
}
template<class T> auto operator<<(ostream &out, T &&x) -> decltype(x.begin(), out) {
	out << '{';
	for(auto it = x.begin(); it != x.end(); ++it)
		out << *it << (it == prev(x.end()) ? "" : ", ");
	return out << '}';
}
void dump() {}
template<class T, class... Args> void dump(T &&x, Args... args) {
	cerr << x << ";  ";
	dump(args...);
}
#ifdef DEBUG
  struct Nl{~Nl(){cerr << '\n';}};
# define debug(x...) cerr << (strcmp(#x, "") ? #x ":  " : ""), dump(x), Nl(), cerr << ""
#else
# define debug(...) 0 && cerr
#endif
mt19937_64 rng(0);
int rd(int l, int r) {
	return uniform_int_distribution<int>(l, r)(rng);
}
// end of templates

int getLcs(string s, string t) {
	int n = size(s), m = size(t);
	auto dp = vector<vector<int>>(n+1, vector<int>(m+1));
	FOR(i, 1, n) FOR(j, 1, m) {
		dp[i][j] = max(dp[i-1][j], dp[i][j-1]);
		dp[i][j] = max(dp[i][j], (dp[i-1][j-1]+1)*(s[i-1] == t[j-1]));
	}
	return dp[n][m];
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	
	int n, m, q;
	cin >> n >> m >> q;
	string s, t;
	cin >> s >> t;
	
	while(q --> 0) {
		int i, j, k, l;
		cin >> i >> j >> k >> l;
		--i; --j; --k; --l;
		string a, b;
		FOR(xd, i, j) a += s[xd];
		FOR(xd, k, l) b += t[xd];
		debug(a, b);
		cout << getLcs(a, b) << '\n';
	}
}