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Cod sursa(job #647488)
#include<fstream>
using namespace std;
ifstream fin("cmlsc.in");
ofstream fout("cmlsc.out");
int x[1025],y[1025],m,n,lcs[1025][1025],i,j,lala[1025],l;
int main()
{
fin>>n>>m;
for(i=1;i<=n;i++) fin>>x[i];
for(i=1;i<=m;i++) fin>>y[i];
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
if(x[i]==y[j])
lcs[i][j]=lcs[i-1][j-1]+1;
else lcs[i][j]=max(lcs[i-1][j],lcs[i][j-1]);
i=n; j=m;
l=lcs[n][m];
while(i&&j)
{
if(x[i]==y[j])
{
lala[l]=x[i];
l--;
i--;
j--;
}
else
if(lcs[i][j-1]>=lcs[i-1][j]) j--;
else i--;
}
fout<<lcs[n][m]<<endl;
for(i=1;i<=lcs[n][m];i++)
fout<<lala[i]<<" ";
return 0;
}