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Cod sursa(job #672212)
#include<iostream>
#include<fstream>
using namespace std;
int main()
{ifstream f("cmlsc.in");
ofstream g("cmlsc.out");
int m,n,i,j,k,v[500][500];
char a[500],b[500],c[500];
f>>m;
f>>n;
k=0;
for(i=1;i<=m;i++)
f>>a[i];
for(i=1;i<=n;i++)
f>>b[i];
for(i=0;i<=m;i++)
for(j=0;j<=n;j++)
v[i][j]=0;
for(i=1;i<=m;i++)
for(j=1;j<=n;j++)
if(a[i]==b[j])
v[i][j]=v[i-1][j-1]+1;
else
if(v[i-1][j]>v[i][j-1])
v[i][j]=v[i-1][j];
else
if(v[i][j-1]>=v[i-1][j])
v[i][j]=v[i][j-1];
i=m;
j=n;
while(i>0&&j>0)
if(v[i][j]==v[i-1][j])
i--;
else
if(v[i][j]==v[i][j-1])
j--;
else {k++;
c[k]=a[i];
i--;
j--;
}
g<<k<<endl;
for(i=k;i>=1;i--)
g<<c[i]<<" ";
f.close();
g.close();
}