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Cod sursa(job #555101)
#include<iostream>
#include<fstream>
#include<vector>
using namespace std;
int n,m,d;
vector<int> a;
vector<int> b;
vector<int> c;
int mat[1025][1025];
void cmlsc(){
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++){
if(a[i]==b[j]) mat[i][j]=1+mat[i-1][j-1];
else if(mat[i-1][j]>mat[i][j-1]) mat[i][j]=mat[i-1][j];
else mat[i][j]=mat[i][j-1];}}
void afis(int i,int j){
if(i>0&&j>0)
if(a[i]==b[j]){
c.push_back(a[i]);
afis(i-1,j-1);}
else if(mat[i-1][j]==mat[i][j]) afis(i-1,j);
else if(mat[i][j-1]==mat[i][j]) afis(i,j-1);}
int main(){
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
f>>n>>m;
a.resize(n+1);
for(int i=1;i<=n;i++){f>>d;a[i]=d;}
b.resize(m+1);
for(int i=1;i<=m;i++){f>>d;b[i]=d;}
cmlsc();
afis(n,m);
g<<c.size()<<'\n';
for(int i=c.size();i>0;i--)g<<c[i-1]<<' ';
f.close();
g.close();
return 0;}