Compilare: user.cpp: In function 'void read_data()': user.cpp:93: warning: large integer implicitly truncated to unsigned type user.cpp: In function 'void write_data()': user.cpp:127: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dfsCN(short int)': user.cpp:147: warning: comparison between signed and unsigned integer expressions user.cpp:166: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dijkstra()': user.cpp:206: warning: comparison between signed and unsigned integer expressions user.cpp:223: warning: comparison between signed and unsigned integer expressions user.cpp:265: warning: comparison between signed and unsigned integer expressions user.cpp:274: warning: large integer implicitly truncated to unsigned type user.cpp:275: warning: comparison between signed and unsigned integer expressions user.cpp:276: warning: comparison between signed and unsigned integer expressions