Compilare: user.cpp: In function ‘void Dijkstra()’: user.cpp:68:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<A[nOptim.i].size(); i++){ ^ user.cpp: In function ‘void initializare()’: user.cpp:40:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &c); ^ user.cpp: In function ‘int main()’: user.cpp:91:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.in","rt",stdin); ^ user.cpp:92:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.out","wt",stdout); ^