ll@N;
if(N>=15) wt((1<<16)-1);
else{
    ll dp[2][1<<16]{};
    int cur=0;
    dp[cur][0]=1;
    rep(N){
        ll@a;
        int nxt=1-cur;
        rep(j,1<<16)dp[nxt][j]=dp[cur][j];
        rep(j,1<<16)if(dp[cur][j]){
            rep(16) {
                dp[nxt][j|a]=1;
                a=((a>>1))+((a%2)<<15);
            }
        }
        cur=nxt;
    }
    ll ans=0;
    rep(i,1<<16)if(dp[cur][i])ans>?=i;
    wt(ans);
}