Compilare: user.cpp: In function ‘void solve(int, int, long long int)’: user.cpp:51:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0 ; i < v[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:102:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < myVect.size(); i++) ^ user.cpp:70:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("avioane2.in", "r", stdin); ^ user.cpp:71:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("avioane2.out", "w", stdout); ^ user.cpp:73:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &n, &m, &k); ^ user.cpp:79:62: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d", &x, &start, &y, &stop, &cost); ^ user.cpp:89:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^