Compilare: user.cpp: In function ‘void Dijkstra(int)’: user.cpp:49:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0; k<v[nod].size(); k++) ^ user.cpp:31:15: warning: unused variable ‘sz’ [-Wunused-variable] int i,nod,sz,mn,k; ^ user.cpp: In function ‘void citeste(int&)’: user.cpp:18:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,stdin),poz=0; ^ user.cpp:24:42: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,stdin),poz=0; ^ user.cpp: In function ‘int main()’: user.cpp:63:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscnv.in","r",stdin); ^ user.cpp:64:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscnv.out","w",stdout); ^ user.cpp: In function ‘void Dijkstra(int)’: user.cpp:31:18: warning: ‘mn’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,nod,sz,mn,k; ^ user.cpp:58:21: warning: ‘nod’ may be used uninitialized in this function [-Wmaybe-uninitialized] exist[nod]=1; ^