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Cod sursa(job #886852)
#include<fstream>
using namespace std;
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
int m,n,a[2000],b[2000],sol[2000],d[2000][2000],i,j,k;
int main()
{
f>>m>>n;
for(i=1;i<=m;i++)
f>>a[i];
for(j=1;j<=n;j++)
f>>b[j];
for(i=1;i<=m;i++)
for(j=1;j<=n;j++)
if(a[i]==b[j])
d[i][j]=1+d[i-1][j-1];
else
if(d[i-1][j]>d[i][j-1])
d[i][j]=d[i-1][j];
else d[i][j]=d[i][j-1];
i=m;j=n;
while(i>0)
{
if(a[i]==b[j])
{sol[++k]=a[i];
i--;
j--;
}
else
if(d[i-1][j]>d[i][j-1])
i--;
else j--;}
g<<k<<'\n';
for(i=k;i>=1;i--)
g<<sol[i]<<' ';
f.close();
g.close();
}