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Cod sursa(job #576970)
#include <stdio.h>
#define max(a,b) (a>b)?a:b
using namespace std;
int n;
int m;
int a[1050];
int b[1050];
int c[1050][1050];
void citire()
{
scanf("%d %d",&n,&m);
for(int i=1;i<=n;++i)
scanf("%d",&a[i]);
for(int i=1;i<=m;++i)
scanf("%d",&b[i]);
}
void subsir()
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
if(a[i]==b[j])
{
c[i][j]=c[i-1][j-1]+1;
}
else
{
c[i][j]=max(c[i][j-1],c[i-1][j]);
}
}
}
}
void afis(int i, int j)
{
if(!i)
return;
if(a[i]==b[j])
{
afis(i-1,j-1);
printf("%d ",a[i]);
return;
}
if(c[i-1][j]>c[i][j-1])
afis(i-1,j);
else
afis(i,j-1);
}
int main()
{
freopen("cmlsc.in","r",stdin);
freopen("cmlsc.out","w",stdout);
citire();
subsir();
printf("%d\n",c[n][m]);
afis(n,m);
return 0;
}