omizi.cpp: In function 'void dfsst(int)': omizi.cpp:19: warning: comparison between signed and unsigned integer expressions omizi.cpp: In function 'int main()': omizi.cpp:108: warning: unused variable 'j' omizi.cpp:109: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result omizi.cpp:110: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result omizi.cpp:111: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result omizi.cpp:113: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result omizi.cpp:115: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result omizi.cpp:119: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result