turn1.cpp: In function `void dfs(int)': turn1.cpp:13: warning: comparison between signed and unsigned integer expressions turn1.cpp: In function `int main()': turn1.cpp:21: warning: unused variable `int j' turn1.cpp:21: warning: `int poz1' might be used uninitialized in this function turn1.cpp:21: warning: `int poz2' might be used uninitialized in this function