soc.cpp: In function 'int FindParent(TreeNode*&, TreeNode*&)': soc.cpp:64: warning: comparison between signed and unsigned integer expressions soc.cpp: In function 'void DFS(TreeNode*)': soc.cpp:96: warning: comparison between signed and unsigned integer expressions soc.cpp: In function 'void DinamicProgramming(TreeNode*)': soc.cpp:102: warning: comparison between signed and unsigned integer expressions soc.cpp:108: warning: comparison between signed and unsigned integer expressions soc.cpp: In function 'void Reconstitute(TreeNode*)': soc.cpp:138: warning: comparison between signed and unsigned integer expressions soc.cpp: In function 'int main()': soc.cpp:142: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result soc.cpp:143: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result soc.cpp:145: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result soc.cpp:147: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result soc.cpp:149: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result soc.cpp: In function 'void Reconstitute(TreeNode*)': soc.cpp:125: warning: 'which' may be used uninitialized in this function