//In the name of God
#include <bits/stdc++.h>
#include "robots.h"
using namespace std;
typedef int ll;
typedef pair<ll, ll> pll;
const ll maxn = 1e5 + 100;
const ll maxm = 1e6 + 100;
const ll mod = 1e9 + 7;
const ll inf = 1e9;
#define fast_io ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file_io freopen("input.txt", "r+", stdin);freopen("output.txt", "w+", stdout);
#define pb push_back
#define Mp make_pair
#define F first
#define S second
#define Sz(x) ll((x).size())
#define all(x) (x).begin(), (x).end()
ll a, b, t, x[maxn], y[maxn], w[maxm], s[maxm];
pll ww[maxn], ss[maxn];
vector<ll> v1[maxn], v2[maxn];
bool ok[maxm];
bool check(ll e){
fill(ok, ok + t, 0);
set<pll> st;
// cout << "# " << e << "\n";
for(ll i = 0; i < a; i++){
for(ll j : v1[i]){
st.insert(Mp(-w[j], j));
}
for(ll j = 0; j < e; j++){
if(st.empty()) break;
//cout << "! " << i << " -> " << st.begin()->S << "\n";
ok[st.begin()->S] = 1;
st.erase(st.begin());
}
}
ll cnt = 0;
for(ll i = 0; i < b; i++){
for(ll j : v2[i]){
if(!ok[j]) cnt++;
}
cnt = max(cnt - e, 0);
}
for(ll j : v2[b]){
if(!ok[j]) cnt++;
}
return (cnt == 0);
}
int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
a = A;
b = B;
t = T;
for(ll i = 0; i < a; i++){
x[i] = X[i];
}
for(ll i = 0; i < b; i++){
y[i] = Y[i];
}
sort(x, x + a);
sort(y, y + b);
for(ll i = 0; i < t; i++){
w[i] = upper_bound(x, x + a, W[i]) - x;
s[i] = upper_bound(y, y + b, S[i]) - y;
if(w[i] >= a && s[i] >= b) return -1;
//cout << i << ": " << w[i] << " " << s[i] << "\n";
ww[i] = Mp(w[i], i);
ss[i] = Mp(s[i], i);
}
//sort(ww, ww + t);
sort(ss, ss + t);
for(ll i = 0; i < t; i++){
v1[w[ss[i].S]].pb(ss[i].S);
v2[s[ww[i].S]].pb(ww[i].S);
}
ll l = 0, r = t, mid;
while(r - l > 1){
mid = (l + r) >> 1;
if(check(mid)) r = mid;
else l = mid;
}
return r;
}
/*int main(){
freopen("sample2.in", "r", stdin);
int A, B, T, X[100], Y[100], W[100], S[100];
cin >> A >> B >> T;
for(ll i = 0; i < A; i++){
cin >> X[i];
}
for(ll i = 0; i < B; i++){
cin >> Y[i];
}
for(ll i = 0; i < T; i++){
cin >> W[i] >> S[i];
}
cout << putaway(A, B, T, X, Y, W, S);
return 0;
}*/
