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Cod sursa(job #594431)
#include<fstream.h>
#define max(a,b) ((a > b) ? (a) : (b))
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
int a[2024],b[2024],d[2024][2024],n,m,sir[2024],k=0;
int main()
{
int i,j;
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[i])
d[i][j]=1+d[i-1][j-1];
else
d[i][j]=max(d[i-1][j],d[i][j-1]);
for(i=m,j=n; i; )
if(a[i]==b[j])
sir[++k]=a[i],--i,--j;
else
if(d[i-1][j] < d[i][j-1])
--j;
else
--i;
g<<k<<"\n";
for(i=k; i;--i)
g<<sir[i]<<" ";
return 0;
}