Compilare: user.cpp: In function ‘int flux()’: user.cpp:33:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0; k<v[nod].size(); ++k) ^ user.cpp:24:14: warning: unused variable ‘l1’ [-Wunused-variable] int rez, l1, l2; ^ user.cpp:24:18: warning: unused variable ‘l2’ [-Wunused-variable] int rez, l1, l2; ^ user.cpp: In function ‘int main()’: user.cpp:123:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algola.in", "r", stdin); ^ user.cpp:124:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("algola.out", "w", stdout); ^ user.cpp:126:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:129:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &nr[i]); ^ user.cpp:140:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &a, &b, &cs); ^