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Cod sursa(job #672428)
#include <fstream>
using namespace std;
ifstream f("palm.in");
ofstream g("palm.out");
int i,st,dr,MAX,L=-1;
string s;
int main()
{
f>>s;
for(i=0; i<s.length(); i++,L=1)
{
st=i,dr=i;
while(st>=0&&dr<s.length()&&s[st]==s[dr])
{
if (s[st]<s[st-1]) break;
st--,dr++,L+=2;
}
MAX=max(L,MAX);
}
g<<MAX<<'\n';
f.close();
g.close();
return 0;
}