Compilare: user.cpp: In function ‘void addUp(int, int)’: user.cpp:43:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graf[nod].size(); i++) ^ user.cpp: In function ‘void solve()’: user.cpp:60:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graf[top].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:86:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sol.size(); i++) ^ user.cpp: In function ‘void citire()’: user.cpp:25:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &n, &m, &x, &y); ^ user.cpp:29:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &t1, &t2); ^ user.cpp: In function ‘int main()’: user.cpp:79:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("graf.in", "r", stdin); ^ user.cpp:80:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("graf.out", "w", stdout); ^