OJ Board

I made it :
cout<<" "<<count<<". Blank!"<<endl; and cout<<" "<<count<<". Length of longest match: "<<LCS[v2.size()][v1.size()]<<endl;
but i still have PE

cout<<count<<". Length of longest match: "<<LCS[v2.size()][v1.size()]<<endl;
what is wrong with this?

finaly AC...
thank you Mr brianfry713 very much

#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include ...