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Cod sursa(job #812365)
#include <fstream>
using namespace std;
int n, m;
int a[1025], b[1025];
int Lcs[1025][1025], X[1025][1025];
void citire();
void pd();
void afisare();
int main()
{
citire();
pd();
afisare();
return 0;
}
void citire()
{
ifstream fin ("cmlsc.in");
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];
X[i][j]=1;
}
else
if(Lcs[i+1][j]>Lcs[i][j+1])
{
Lcs[i][j]=Lcs[i+1][j];
X[i][j]=2;
}
else
{
Lcs[i][j]=Lcs[i][j+1];
X[i][j]=3;
}
}
void afisare()
{
ofstream fout ("cmlsc.out");
int i, j;
i=j=0;
fout<<Lcs[0][0]<<'\n';
while(i<n && j<m)
if(X[i][j]==1)
{
fout<<a[i]<<' ';
i++;
j++;
}
else
if(X[i][j]==2)
i++;
else
if(X[i][j]==3)
j++;
}