salvare.cpp: In function 'void dfs(int, int, int)': salvare.cpp:20: warning: comparison between signed and unsigned integer expressions salvare.cpp:19: warning: unused variable 'minim' salvare.cpp: In function 'bool Check(int, int, int)': salvare.cpp:44: warning: comparison between signed and unsigned integer expressions salvare.cpp: In function 'void CopySalv()': salvare.cpp:53: warning: comparison between signed and unsigned integer expressions