razboi.cpp: In function 'void dijkstra(int)': razboi.cpp:51: warning: unused variable 'y' razboi.cpp: In function 'int main()': razboi.cpp:97: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result razboi.cpp:98: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result razboi.cpp:100: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result razboi.cpp:102: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result razboi.cpp:106: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result