Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:95: warning: unused variable ‘t’ user.cpp: In function ‘int main()’: user.cpp:129: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long long int’ user.cpp:113: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:114: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:116: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:121: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result