masina1.cpp: In function 'void BFS(int, int*)': masina1.cpp:31: warning: comparison between signed and unsigned integer expressions masina1.cpp: In function 'void solve(int)': masina1.cpp:53: warning: comparison between signed and unsigned integer expressions masina1.cpp: In function 'int main()': masina1.cpp:88: warning: comparison between signed and unsigned integer expressions masina1.cpp:67: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result masina1.cpp:68: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result masina1.cpp:69: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result masina1.cpp:70: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result masina1.cpp:71: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result masina1.cpp:74: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result