Language: C++

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <string>
#include <sstream>
#include <complex>
#include <vector>
#include <list>
#include <queue>
#include <deque>
#include <stack>
#include <map>
#include <set>
#include <functional>
//#include <bits/stdc++.h>

using namespace std;
typedef long long unsigned int ll;	//10^18
typedef unsigned long ul;

typedef map<ll, ll> m;
typedef multimap<ll, ll> mm;
typedef set<ll> s;
typedef multiset<ll> ms;
typedef priority_queue<ll> pq;
typedef queue<ll> q;
typedef deque<ll> dq;
typedef list<ll> lst;
typedef pair<ll, ll> p;

#define EPS (1e-7)
#define INF (1e9)
#define PI (acos(-1))

#define and &&
#define or ||
#define not !
#define neq !=
#define eq ==

#define REP(i, n) for(int i=0;i<n;i++)	// from 0 to n
#define REPR(i, n) for(int i = n;i >= 0;i--)	// from n to 0
#define FOR(i, m, n) for(int i = m;i < n;i++)	// from m to n
#define DBG(a) cout << #a << " : " << a << "\n";
#define MSG(a) cout << a << "\n";
#define ALL(v) v.begin(), v.end()
#define SZ(x) ((int)(x).size())

#define pb push_back	//配列などの最後に要素を追加
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define F first
#define S second

template<class T>bool chmax(T& a, const T& b) { if (a < b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T& a, const T& b) { if (b < a) { a = b; return 1; } return 0; }

int dy[] = { 0, 0, 1, -1, 0 };
int dx[] = { 1, -1, 0, 0, 0 };

//swap(a, b);
//sort(arr, arr + n);	//昇順
//sort(arr, arr+n, greater<int>());	//降順
//max(a, b);
//min(a, b);

//upper_bound(a, a+n, k)	//配列aの中で、kより大きい値が初めて現れる位置へのポインタ
//upper_bound(ALL(v), k)	//STLvの中で、kより大きい値が初めて現れる位置へのポインタ
//lower_bound(a, a+n, k)
//lower_bound(ALL(v), k)	//STLvの中で、kの以上値が初めて現れる位置へのポインタ
//lower_bound(ALL(v),k) - upper_bound(ALL(v),k)	//二分探索を用いて、ある列aに含まれる数kの個数を求める


// index が条件を満たすかどうか
bool isOK(vector<ll>& v, int index, int key) {
	if (v[index] >= key) return true;
	else return false;
}

// 汎用的な二分探索	
int bs(vector<ll>& v, int key) {
	int ng = -1; //「index = 0」が条件を満たすこともあるので、初期値は -1
	int ok = (int)v.size(); // 「index = a.size()-1」が条件を満たさないこともあるので、初期値は a.size()

	/* ok と ng のどちらが大きいかわからないことを考慮 */
	while (abs(ok - ng) > 1) {
		int mid = (ok + ng) / 2;

		if (isOK(v, mid, key)) ok = mid;
		else ng = mid;
	}
	return ok;
}

// 最大公約数
int gcd(int a, int b) {
	if (a < b)	swap(a, b);
	int r = a % b;
	while (r != 0) {
		a = b;
		b = r;
		r = a % b;
	}
	return b;

}

// 素因数分解
vector<ll> prime_factorization(int n) {
	vector<ll> cnt_pf(n, 0);
	int cnt = n;
	FOR(i, 2, cnt) {
		while (n % i == 0) {
			cnt_pf[i]++;
			n /= i;
		}
		if (n == 1)	break;
	}
	return cnt_pf;
}

signed main()
{
	//cin.tie(0);
	//ios::sync_with_stdio(false);

	//string s;
	//cin >> s;
	
	int n, m, ans = 1;
	cin >> n >> m;

	n = gcd(n, m);

	vector<ll> a(n);
	a = prime_factorization(n);
	FOR(i, 2, a.size()) {
		if (a[i] != 0) {
			ans++;
		}
	}

	printf("%d", ans);

	return 0;
}

Compiler output:
a.cc:37:9: error: "and" cannot be used as a macro name as it is an operator in C++
   37 | #define and &&
      |         ^~~
a.cc:38:9: error: "or" cannot be used as a macro name as it is an operator in C++
   38 | #define or ||
      |         ^~
a.cc:39:9: error: "not" cannot be used as a macro name as it is an operator in C++
   39 | #define not !
      |         ^~~