Язык Java
import java.util.*;
import java.io.*;
public class Main {
static int _16yearsOld = 0;
static int min = 14;
static int max = 16;
static int diff = max - min;
static Random random = new Random();
static int rand = random.nextInt(diff + 1);
rand += min;
public static void main(string[] args) {
int[] students = new int[19];
for (int i = 0; i <= students.size(); i++) {
students[i] = rand;
}
for (int i = 0; i <= students.size(); i++) {
if (students[i] == 16)
_16yearsOld++;
}
}
}
#include <iostream>
typedef long long ll;
using namespace std;
bool ll_is_valid(ll t, ll N, ll x, ll y)
{
return t / x + (t - x) / y >= N;
}
ll f(ll N, ll x, ll y)
{
ll R = 1;
while (!ll_is_valid(R,N,x,y)) R *= 2;
ll L = R / 2;
while(R - L > 1)
{
ll M = (L + R) / 2;
if (!ll_is_valid(M,N,x,y)) {L = M;}
else {R = M;}
}
return R;
}
int main()
{
ll N,x,y;
cin >> N >> x >> y;
if(x > y) swap( x, y );
cout << f(N, x, y) << std::endl;
}
