#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int main()

{

    ll a,b,c;

    scanf("%lld%lld%lld",&a,&b,&c);

    ll ans=c*;

    if((a>=&&b>=)||(a>=))

    printf("%lld\n",ans+a+b*);

    else if(a==&&b==)

    printf("%lld\n",c);

    else if((a==&&b==)||(a==&&b==))

    printf("%lld\n",c*+);

    else if(b==)

    printf("%lld\n",c);

    else if(c==)

    printf("%lld\n",b);

    else

    printf("%lld\n",c*+b*-);

    return ;

}