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#include <cstdio>
using namespace std;
int n, a[100005], poz;
int dp[100005];
int main()
{
freopen("scmax.in", "r", stdin);
freopen("scmax.out", "w", stdout);
scanf("%d", &n);
for(int i=1; i<=n; i++)
{
scanf("%d", &a[i]);
}
dp[n]=1;
for(int i=n-1; i>=1; i--)
{
int vmax=-1;
for(int j=i+1; j<=n; j++)
{
if(a[j] > a[i] && dp[j]>vmax)
vmax=dp[j];
}
dp[i]=1+vmax;
if(dp[i]>dp[poz])
{
poz=i;
}
}
printf("%d\n", dp[poz]);
int nrp=poz;
printf("%d ", a[poz]);
for(int i=poz+1; i<=n; i++)
{
if(dp[i] == dp[nrp]-1)
{
if(a[i]>a[nrp])
printf("%d ", a[i]);
nrp=i;
}
}
return 0;
}