Compilare: user.cpp: In function ‘void solve(Graph*, Heap*, Result*)’: user.cpp:173:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g->V[nod].size(); i++) { ^ user.cpp: In function ‘void print(Result*)’: user.cpp:196:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < r->vMuchii.size(); i++) ^ user.cpp: In function ‘void read(Graph*)’: user.cpp:141:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &g->N, &g->M); ^ user.cpp:146:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &a, &b, &c); ^ user.cpp: In function ‘int main()’: user.cpp:202:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.in", "r", stdin); ^ user.cpp:203:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apm.out", "w", stdout); ^