Compilare: user.cpp: In function ‘void db(int)’: user.cpp:38:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (d[V[aux][i].first] > d[aux] + V[aux][i].second) ^ user.cpp: In function ‘void citire()’: user.cpp:21:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %lld", &a, &b, &c); ^ user.cpp: In function ‘int main()’: user.cpp:79:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &a, &b, &c); ^ user.cpp:80:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] citire(); ^ user.cpp:81:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] sol = INF * 3; ^ user.cpp:82:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i = 1; i <= n; ++ i) ^