#include using namespace std; using ll = long long; using ld = long double; #define all(s) (s).begin(),(s).end() #define vcin(n) for(ll i=0;i>n[i] #define rever(vec) reverse(vec.begin(), vec.end()) #define sor(vec) sort(vec.begin(), vec.end()) #define fi first #define se second //const ll mod = 998244353; const ll mod = 1000000007; const ll inf = 2000000000000000000ll; static const long double pi = 3.141592653589793; template void chmax(T& t,const U& u){if(t void chmin(T& t,const U& u){if(t>u) t=u;} ll modPow(ll a, ll n, ll mod) { ll ret = 1; ll p = a % mod; while (n) { if (n & 1) ret = ret * p % mod; p = p * p % mod; n >>= 1; } return ret; } int main() { /* mod は 1e9+7 */ ios::sync_with_stdio(false); std::cin.tie(nullptr); cout<< fixed << setprecision(10); ll h,w,q; cin>>h>>w>>q; map m; ll ans=h*w; for(int i=0;i>x>>y; swap(x,y); if(m[x]==0){ m[x]=y; ans-=w+1-y; } else if(m[x]>y){ ans-=(y-m[x]); m[x]=y; } cout<