Job 19712

Compiler output

prog.cpp: In function 'int main()':
prog.cpp:52:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size(); ++i)
                    ^
prog.cpp:67:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int j=i+1;j<s.size() && ok;++j)
                   ^

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