zmeu.cpp: In function 'void Dijkstra(int)': zmeu.cpp:84: warning: comparison between signed and unsigned integer expressions zmeu.cpp: In function 'int main()': zmeu.cpp:122: warning: unused variable 'node' zmeu.cpp:120: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result zmeu.cpp:121: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result zmeu.cpp:123: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result zmeu.cpp:124: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result zmeu.cpp:126: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result zmeu.cpp:131: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result