#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;
program SumSeq;
{$APPTYPE CONSOLE}
uses
SysUtils;
//const m:Integer ;
var
i, j, m, s:Integer;
n: array of Integer;
begin
s:=0;
Writeln(m);
Writeln('vvedite m');
Readln(m);
SetLength(n,m);
for i:=0 to m do
j:=Random(10);
if j<5
then n[i]:=-1*j
else n[i]:=j;
write(n[i], ' ')
end;
Writeln;
Writeln('To continue push >>ENTER');
Readln;
if n[i]<0
then s:=s+sqr(n[i])
writeln('s=',s);
readln
{ TODO -oUser -cConsole Main : Insert code here }
end.
#include <iostream>
typedef long long ll;
using namespace std;
bool ll_is_valid(ll t, ll N, ll x, ll y)
{
return t / x + (t - x) / y >= N;
}
ll f(ll N, ll x, ll y)
{
ll R = 1;
while (!ll_is_valid(R,N,x,y)) R *= 2;
ll L = R / 2;
while(R - L > 1)
{
ll M = (L + R) / 2;
if (!ll_is_valid(M,N,x,y)) {L = M;}
else {R = M;}
}
return R;
}
int main()
{
ll N,x,y;
cin >> N >> x >> y;
if(x > y) swap( x, y );
cout << f(N, x, y) << std::endl;
}
program SumSeq;
{$APPTYPE CONSOLE}
uses
SysUtils;
//const m:Integer ;
var
i, j, m, s:Integer;
n: array of Integer;
begin
s:=0;
Writeln(m);
Writeln('vvedite m');
Readln(m);
SetLength(n,m);
for i:=0 to m do
begin
j:=Random(10);
if j<5
then n[i]:=-1*j
else n[i]:=j;
write(n[i], ' ')
end;
Writeln;
Writeln('To continue push >>ENTER');
Readln;
for i:=0 to m do
begin
if n[i]<0
then s:=s+sqr(n[i])
end;
writeln('s=',s);
readln
{ TODO -oUser -cConsole Main : Insert code here }
end.