asfalt1.cpp: In function 'void Dijkstra(int)': asfalt1.cpp:30: warning: comparison between signed and unsigned integer expressions asfalt1.cpp: In function 'bool BFS()': asfalt1.cpp:52: warning: comparison between signed and unsigned integer expressions asfalt1.cpp: In function 'int main()': asfalt1.cpp:77: warning: comparison between signed and unsigned integer expressions asfalt1.cpp:84: warning: comparison between signed and unsigned integer expressions asfalt1.cpp:100: warning: comparison between signed and unsigned integer expressions asfalt1.cpp:66: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result asfalt1.cpp:67: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result asfalt1.cpp:69: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result asfalt1.cpp:71: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result