#include <iostream>
#include <unordered_map>
using namespace std;
typedef long long ll;
ll n,m;
inline int read(){
	int x= 0,f = 1;
	char ch = getchar();
	while(ch<'0'||ch>'9'){
		if(ch == '-'){
			f = -1;
		}
		ch = getchar();
	}
	while(ch>='0'&&ch<='9'){
		x = (x<<1)+(x<<3)+(ch^48);
		ch=getchar();		
	}
	return x*f;
}
int main(){
	n = read(),m = read();
	unordered_map<ll,ll> r;
	unordered_map<ll,ll> c;		
	ll numr = 0,numc = 0;
	while(m--){
		ll x,y;
		x = read(),y = read();
		if(r[y]==0){
			numr++;
			r[y]=1;
		}
		if(c[x]==0){
			numc++;
			c[x]=1;
		}
	}
	printf("%lld",numr*n + numc*n - numc*numr);
	return 0;
}