Compilare: user.cpp: In function ‘void citire()’: user.cpp:24:12: warning: unused variable ‘cost’ [-Wunused-variable] int x, cost; ^ user.cpp: In function ‘void bellmanFord(int)’: user.cpp:70:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[x].size(); ++i) ^ user.cpp: In function ‘void dijkstra(int)’: user.cpp:106:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[x].size(); ++i) ^ user.cpp: In function ‘void actualizareMuc()’: user.cpp:121:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v[i].size(); ++j) { ^