Cod sursa(job #836837)
#include <cstdlib>
#include <fstream>
using namespace std;
const int NMAX = 1031;
int v[3][NMAX], C[NMAX][NMAX];
inline int _max(int x, int y) {return x >= y ? x : y;}
int main()
{
int i, j, k;
ifstream in("cmlsc.in");
ofstream out("cmlsc.out");
in >> v[0][0] >> v[1][0];
for(i = 1; i <= v[0][0]; ++i)
{
in >> v[0][i];
}
for(i = 1; i <= v[1][0]; ++i)
{
in >> v[1][i];
}
for(i = 1; i <= v[0][0]; ++i)
{
for(j = 1; j <= v[1][0]; ++j)
{
if(v[0][i] == v[1][j])
{
C[i][j] = 1 + C[i-1][j-1];
}
else {
C[i][j] = _max(C[i-1][j], C[i][j-1]);
}
}
}
v[2][0] = k = C[v[0][0]][v[1][0]];
for(i = v[0][0], j = v[1][0]; i && j; )
{
if(v[0][i] == v[1][j])
{
v[2][k--] = v[0][i];
--i;
--j;
}
else if(C[i-1][j] > C[i][j-1]) --i;
else --j;
}
out << v[2][0] << '\n';
for(i = 1; i <= v[2][0]; ++i)
{
out << v[2][i] << ' ';
}
out << '\n';
return EXIT_SUCCESS;
}