Compilare: user.cpp: In function ‘void addedge(short int, short int)’: user.cpp:30:31: warning: narrowing conversion of ‘g[((int)b)].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘short int’ inside { } [-Wnarrowing] Edge direct = {b, g[b].size(), 0, 1}; ^ user.cpp:31:32: warning: narrowing conversion of ‘g[((int)a)].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘short int’ inside { } [-Wnarrowing] Edge inverse = {a, g[a].size(), 0, 0}; ^ user.cpp: In function ‘void addedgesp(short int)’: user.cpp:38:20: warning: narrowing conversion of ‘(((int)x) + ((int)n))’ from ‘int’ to ‘short int’ inside { } [-Wnarrowing] Edge direct = {x + n, g[x + n].size(), 0, 1}; ^ user.cpp:38:39: warning: narrowing conversion of ‘g[(((int)x) + ((int)n))].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘short int’ inside { } [-Wnarrowing] Edge direct = {x + n, g[x + n].size(), 0, 1}; ^ user.cpp:39:32: warning: narrowing conversion of ‘g[((int)x)].std::vector<_Tp, _Alloc>::size<Edge, std::allocator<Edge> >()’ from ‘std::vector<Edge>::size_type {aka unsigned int}’ to ‘short int’ inside { } [-Wnarrowing] Edge inverse = {x, g[x].size(), 0, 1}; ^ user.cpp: In function ‘bool bfs()’: user.cpp:76:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short int i = 0; i < g[from].size(); i++) { ^ user.cpp: In function ‘short int dfs(short int, short int)’: user.cpp:94:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short int i = rem[from]; i < g[from].size(); i++) { ^