Compilare: user.cpp: In function ‘int main()’: user.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=T;i++) ~^~~ user.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=V.size();i++) ~^~~~~~~~~~ user.cpp:28:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=T;j++) ~^~~ user.cpp:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=T;j++) ~^~~ user.cpp:46:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=T;i++) ~^~~