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Cod sursa(job #999433)
#include <fstream>
using namespace std;
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
int a[1025][1025],b[1025],c[1025],sub[1025];
int main()
{
int n,m,i,j,x=0;
f>>n>>m;
for(i=1;i<=n;i++)
f>>b[i];
for(i=1;i<=m;i++)
f>>c[i];
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
{
if(b[i]==c[j])
a[i][j]=a[i-1][j-1]+1;
else
a[i][j]=max(a[i-1][j], a[i][j-1]);
}
/*for(i=1;i<=n;i++)
{
for(j=1;j<=m;j++)
g<<a[i][j]<<" ";
g<<"\n";
}
g<<"\n";
*/
i=n;j=m;
while(a[i][j])
{
while(a[i][j]==a[i-1][j])
i--;
while(a[i][j]==a[i][j-1])
j--;
// {
x++;
sub[x]=b[i];
// }
i--;
j--;
}
g<<a[n][m]<<"\n";
for(i=x;i>=1;i--)
g<<sub[i]<<" ";
return 0;
}