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Cod sursa(job #806616)
#include<stdio.h>
int max(int a,int b)
{
return a>b?a:b;
}
int n,m,a[1050],b[1050],d[1050][1050],sol[1050],rez;
int main()
{
freopen("cmlsc.in", "r", stdin);
freopen("cmlsc.out", "w", stdout);
int i,j;
scanf("%d%d",&m,&n);
for(i=1;i<=m;i++)
scanf("%d",&a[i]);
for(i=1;i<=n;i++)
scanf("%d",&b[i]);
for(i=1;i<=m;i++)
for(j=1;j<=n;j++)
if(a[i]==b[j])
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>0;)
if(a[i]==b[j])
sol[++rez]=a[i],i--,j--;
else if(d[i-1][j]<d[i][j-1])
j--;
else
i--;
printf("%d\n",rez);
for(i=rez;i>=1;i--)
printf("%d ",sol[i]);
printf("\n");
return 0;
}