Compilare: user.cpp: In function ‘void euler()’: user.cpp:39:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vecini[dest].size(); i++) ^ user.cpp: In function ‘void afisare()’: user.cpp:63:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size() - 1; i++) ^ user.cpp: In function ‘void citire()’: user.cpp:15:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:19:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &tmp1, &tmp2); ^ user.cpp: In function ‘int main()’: user.cpp:71:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclueuler.in", "r", stdin); ^ user.cpp:72:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclueuler.out", "w", stdout); ^