Compilare: user.cpp: In function ‘void solve(int)’: user.cpp:230:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = d; i<graf[nod].size(); ++i) ^ user.cpp:245:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i<graf[nod].size(); ++i) ^ user.cpp:260:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i<graf[nod].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:324:35: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf ("%d\n", solutie[i]); ^ user.cpp:299:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("metro.in", "r", stdin); ^ user.cpp:300:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("metro.out", "w", stdout); ^