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Cod sursa(job #509321)
#include<fstream>
#define maxim(a, b) ((a > b) ? a : b)
using namespace std;
int m,n,a[1024],b[1024],d[1024][1024],sir[1024],bst;
int main()
{
int i, j;
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
f>>m>>n;
for(i=1;i<=m;i++)
f>>a[i];
for(i=1;i<=n;i++)
f>>b[i];
for(i=1;i<=m;i++)
for(j=1;j<=n;j++)
if(a[i]==b[j])
d[i][j]=1+d[i-1][j-1];
else
d[i][j]=maxim(d[i-1][j],d[i][j-1]);
i=m;
j=n;
while(i)
if (a[i]==b[j])
{
sir[++bst]=a[i];
--i;
--j;
}
else
if (d[i-1][j]<d[i][j-1])
--j;
else
--i;
g<<bst<<"\n";
for (i=bst;i>=1;--i)
g<<sir[i]<<" ";
return 0;
}