#include <bits/stdc++.h>
#define nl '\n'
#define pb push_back
#define E exit(0)
#define all(v) v.begin(),v.end()
#define ff first
#define ss second
#define sz(s) (s).size()
using namespace std;
using ll=long long;
using pii=pair<int,int>;
using pll=pair<ll,ll>;
const int N=1e6+5;
const int INF=1e9+7;
const int eps=1e-6;
void solve() {
int n,m,k;
cin>>n>>m>>k;
for (int i=1;i<=k;i++) {
int a,b;
cin>>a>>b;
}
cout<<k;
cout<<nl;
}
ll test=1;
int main () {
// freopen(".in","r",stdin);
// freopen(".out","w",stdout);
ios_base::sync_with_stdio(0);
cin.tie();
// cin>>test;
while (test--) solve();
return 0;
}
