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Cod sursa(job #938138)
#include<fstream>
#include<iostream>
#define max(a,b) a>b?a:b
using namespace std;
int main()
{
ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
int n,m,sol[1025],i,j,k=0;
f>>n>>m;
int a[n+1],b[m+1],x[n+1][m+1];
for(i=1;i<=n;i++) f>>a[i];
for(i=1;i<=m;i++) f>>b[i];
for(i=0;i<=n;i++) x[i][0]=0;
for(i=0;i<=m;i++) x[0][i]=0;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
if(a[i]==b[j])
x[i][j]=x[i-1][j-1]+1; // daca gasit => sir din urma+1
else
x[i][j]=max(x[i-1][j],x[i][j-1]);
i=n;j=m;
while(i&&j){
if(a[i]==b[j])
{
sol[++k]=a[i];
i--;j--;
}
else
if(x[i][j-1]>x[i-1][j])
j--;
else
i--;
}
g<<x[n][m]<<'\n';
for(;k;k--)g<<sol[k]<<" ";
}