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Cod sursa(job #874904)
#include<fstream>
#include<iostream>
#include<limits.h>
using namespace std;
ifstream in("cmlsc.in");
ofstream out("cmlsc.out");
int a[1025],b[1025],c[1025][1025],n,m,v[1025];
void cit(){
in>>n>>m;
int i;
for(i=1;i<=n;i++)
in>>a[i];
for(i=1;i<=m;i++)
in>>b[i];
}
int main(){
cit();
int i,j;
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
if(c[i-1][j]>=c[i][j-1])
c[i][j]=c[i-1][j];
else
c[i][j]=c[i][j-1];
out<<c[n][m]<<'\n';
int p=c[n][m];
i=n,j=m;
while(i>0&&j>0){
if(a[i]==b[j]){
v[p--]=a[i--];
j--;
}
else
if(c[i-1][j]>=c[i][j-1])
i--;
else
j--;
}
for(i=1;i<=c[n][m];i++)
out<<v[i]<<' ';
return 0;
}