vitale.cpp: In function 'void DFS(int, int, int)': vitale.cpp:55: warning: comparison between signed and unsigned integer expressions vitale.cpp: In function 'void curata(int)': vitale.cpp:78: warning: comparison between signed and unsigned integer expressions vitale.cpp: In function 'void Kruskal()': vitale.cpp:91: warning: comparison between signed and unsigned integer expressions vitale.cpp:108: warning: comparison between signed and unsigned integer expressions vitale.cpp: In function 'int main()': vitale.cpp:124: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result vitale.cpp:125: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result vitale.cpp:126: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result vitale.cpp:129: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result