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Cod sursa(job #409434)
#include<fstream>
using namespace std;
ifstream fin("cmlsc.in");
ofstream fout("cmlsc.out");
int main()
{ int a[100],b[100],m,n,i,c[100][100]={0},j,r[100],poz;
fin>>m>>n;
for(i=1;i<=m;i++)
fin>>a[i];
for(i=1;i<=n;i++)
fin>>b[i];
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
if(a[j]==b[i])
c[i][j]=c[i-1][j-1] + 1;
else if(c[i-1][j]>c[i][j-1])
c[i][j]=c[i-1][j];
else c[i][j]=c[i][j-1];
poz=c[n][m];
fout<<poz<<endl;
for(i=n,j=m;poz;)
if(a[j]==b[i]) { r[poz--]=a[j]; j--;i--; }
else if(c[i-1][j]==c[i][j]) i--;
else if (c[i][j-1]==c[i][j]) j--;
for(i=1;i<=c[n][m];i++)
fout<<r[i]<<' ';
return 0;
fin.close();
fout.close();
}