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Cod sursa(job #899754)
#include <fstream>
using namespace std;
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
int a[1025],b[1025],c[1025][1025],v[1025],m,n;
int maxx(int x,int y)
{
if(x>y)
return x;
else
return y;
}
int main()
{
int i,j,nr=0;
f>>n>>m;
for(i=1;i<=n;i++)
f>>a[i];
for(j=1;j<=m;j++)
f>>b[j];
f.close();
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
{if(a[i]==b[j])
c[i][j]=c[i-1][j-1]+1;
else
c[i][j]=maxx(c[i-1][j],c[i][j-1]);}
i=n;j=m;
while(i)
{
if(a[i]==b[j])
{
nr++;
v[nr]=a[i];
i--;
j--;
}
else
if(c[i-1][j]<c[i][j-1])
j--;
else
i--;
}
g<<nr<<'\n';
for(i=nr;i>=1;i--)
g<<v[i]<<' ';
g.close();
}