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Cod sursa(job #809285)
#include<fstream>
using namespace std;
ifstream fin("cmlsc.in");
ofstream fout("cmlsc.out");
int a[1025], b[1025], op[1025][1025], LCS[1025][1025], n, m;
void citire();
void afisare();
void pd();
int main()
{
citire();
pd();
afisare();
}
void citire()
{
int i;
fin>>n>>m;
for(i=0;i<n;i++) fin>>a[i];
for(i=0;i<m;i++) fin>>b[i];
}
void pd()
{
int i, j;
for(i=n-1;i>=0;i--)
for(j=m-1;j>=0;j--)
if(a[i]==b[j])
{
LCS[i][j]=1+LCS[i+1][j+1]; op[i][j]=1;
}
else
{
if(LCS[i+1][j]>LCS[i][j+1])
{
LCS[i][j]=LCS[i+1][j]; op[i][j]=2;
}
else
{
LCS[i][j]=LCS[i][j+1]; op[i][j]=3;
}
}
}
void afisare()
{
int i=0, j=0;
fout<<LCS[0][0]<<'\n';
while(i!=n&&j!=m)
{
if(op[i][j]==1)
{
fout<<a[i]<<' ';
i++; j++;
}
else
if(op[i][j]==2)
i++;
else
j++;
}
}