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Cod sursa(job #969654)
#include <fstream>
#include <algorithm>
#include <vector>
using namespace std;
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
int n,m;
short v[1100],u[1100];
short a[1100][1100];
int main()
{
f>>n>>m;
for(int i=1;i<=n;i++)
f>>v[i];
for(int j=1;j<=m;j++)
f>>u[j];
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
if(v[i]==u[j])
a[i][j]=a[i-1][j-1]+1;
else
a[i][j]=max(a[i-1][j],a[i][j-1]);
g<<a[n][m]<<'\n';
vector<int> sol;
for(int i=m;i>0;i--)
if(a[n][i]<a[n][i+1])
sol.push_back(u[i+1]);
for(int i=sol.size()-1;i>=0;i--)
g<<sol[i]<<" ";
return 0;
}