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#include <iostream>

#include <vector>

#include <algorithm>

using namespace std;

class Solution {

public:

bool repeat(string& pattern, string& s)

{

if ( pattern.length() == s.length()

|| s.length() % pattern.length() != 0 )

{

return false;

}

int pos = 0;

while (s.find(pattern, pos) == pos)

pos+=pattern.length();

return pos == s.length();

}

bool repeatedSubstringPattern(string s) {

string pattern;

for (size_t i=0; i<s.length(); ++i)

{

pattern += s[i];

if (repeat(pattern, s))

return true;

}

return false;

}

};

int main()

{

Solution solution;

cout << solution.repeatedSubstringPattern("abababa");

return 0;

}