#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;
}
a,b,c=map(float,input().split())
if a>b and a>c and b>c or b>a and b>c and a>c:
print(a*b)
if a>b and a>c and c>b or c>a and c>b and a>b:
print(a*c)
if b>a and b>c and c>a or c>b and c>a and b>a:
print(b*c)
Объяснение: