Compilare: user.cpp: In function ‘void citire()’: user.cpp:16:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1; k<=m; k++) ~^~~ user.cpp: In function ‘void dijkstra(int)’: user.cpp:27:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[start].size(); i++) ~^~~~~~~~~~~~~~~~ user.cpp:31:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<=n; i++) ~^~~ user.cpp:36:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=1; k<n; k++) ~^~ user.cpp:38:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<=n; i++) ~^~~ user.cpp:39:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(s[i]==0 && d[i]<mn) ~~~~^~~ user.cpp:45:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a[poz].size(); i++) ~^~~~~~~~~~~~~~ user.cpp:47:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d[v[poz][i]]>mn+a[poz][i]) user.cpp: In function ‘int main()’: user.cpp:59:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=2; i<=n; i++) ~^~~ user.cpp: In function ‘void dijkstra(int)’: user.cpp:44:15: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] s[poz]=1; ~~~~~~^~