Compilare: user.cpp: In function ‘void Dijkstra()’: user.cpp:61:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<A[im].size(); i++) if(!viz[A[im][i].y] && d[A[im][i].y]>d[im]+A[im][i].c) ^ user.cpp: In function ‘void initializare()’: user.cpp:25:36: 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:77:38: 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:78:40: 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); ^