Cod sursa(job #460262)
#include <fstream>
using namespace std;
#define dim 1025
int v[dim][dim], a[dim], b[dim], c[dim];
int main()
{
long m, n, i, j;
ifstream fin("cmlsc.in");
ofstream fout("cmlsc.out");
fin>>m >>n;
for(i=1;i<=m;++i)
fin>>a[i];
for(i=1;i<=n;++i)
fin>>b[i];
for(i=1;i<=m;++i)
{
for(j=1;j<=n;++j)
{
if(a[i]==b[j])
v[i][j]=v[i-1][j-1]+1;
else
v[i][j]=(v[i-1][j]>v[i][j-1]?v[i-1][j]:v[i][j-1]);
}
}
int f=0;
int s=v[m][n];
i=m;
j=n;
while(s)
{
if(a[i]==b[j] && s==v[i][j])
{
c[s]=a[i];
--i;
--j;
--s;
}
else
if(v[i-1][j]==s)
--i;
else
--j;
/*if(a[i]==b[j])
{
c[f]=a[m];
++f;
}*/
//s=v[i][j];
}
/*if(v[m+1][n+1]==0)
{
fout<<"0";
return 0;
}*/
fout<<v[m][n] <<'\n';
for(i=1;i<=v[m][n];++i)
fout<<c[i] <<" ";
return 0;
}