Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:90:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<g[heap[1].nod].size();j++) ^ user.cpp:105:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<wait.size();i++) ^ user.cpp: In function ‘void citire()’: user.cpp:22:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld",&n,&m); ^ user.cpp:25:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%ld%ld%ld",&v[i].x,&v[i].y,&v[i].c); ^ user.cpp: In function ‘int main()’: user.cpp:116:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.in","r",stdin); ^ user.cpp:117:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dijkstra.out","w",stdout); ^