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Cod sursa(job #202642)
#include<fstream.h>
#define MAX 1025
int n,m,a[1025],b[1025],sc[MAX][MAX];
ofstream fout("cmlsc.out");
void citire()
{
ifstream fin("cmlsc.in");
int i;
fin>>n>>m;
for(i=1;i<=n;i++)
fin>>a[i];
for(i=1;i<=m;i++)
fin>>b[i];
fin.close();
}
int max(int x, int y,int z)
{
if(x>y && x>z) return x;
if(y>x && y>z) return y;
return z;
}
void sol()
{
int i,j;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
if(sc[i-1][j]!=sc[i][j] && sc[i][j-1]!=sc[i][j])
fout<<a[i]<<' ';
}
void numara()
{
int i,j;
for (i=0;i<=MAX;i++)
sc[0][i]=0, sc[i][0]=0;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
sc[i][j]=max(sc[i-1][j],sc[i][j-1],sc[i-1][j-1]+(a[i]==b[j]));
fout<<sc[n][m]<<'\n';
sol();
}
int main()
{
citire();
numara();
fout.close();
return 0;
}